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subsection</span> </button> <ul id="toc-History_of_Earth_Hour-sublist" class="vector-toc-list"> <li id="toc-Conception_and_start:_2004–2007" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conception_and_start:_2004–2007"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Conception and start: 2004–2007</span> </div> </a> <ul id="toc-Conception_and_start:_2004–2007-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2008" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2008"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>2008</span> </div> </a> <ul id="toc-2008-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2009" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2009"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>2009</span> </div> </a> <ul id="toc-2009-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2010" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2010"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>2010</span> </div> </a> <ul id="toc-2010-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2011" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2011"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.5</span> <span>2011</span> </div> </a> <ul id="toc-2011-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2012" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2012"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.6</span> <span>2012</span> </div> </a> <ul id="toc-2012-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2013" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2013"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7</span> <span>2013</span> </div> </a> <ul id="toc-2013-sublist" class="vector-toc-list"> <li id="toc-Africa" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Africa"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7.1</span> <span>Africa</span> </div> </a> <ul id="toc-Africa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Europe" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Europe"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7.2</span> <span>Europe</span> </div> </a> <ul id="toc-Europe-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-2014" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2014"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.8</span> <span>2014</span> </div> </a> <ul id="toc-2014-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2015" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2015"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.9</span> <span>2015</span> </div> </a> <ul id="toc-2015-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2016" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2016"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.10</span> <span>2016</span> </div> </a> <ul id="toc-2016-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2017" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2017"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.11</span> <span>2017</span> </div> </a> <ul id="toc-2017-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2018" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2018"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.12</span> <span>2018</span> </div> </a> <ul id="toc-2018-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2019" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2019"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.13</span> <span>2019</span> </div> </a> <ul id="toc-2019-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2020" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2020"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.14</span> <span>2020</span> </div> </a> <ul id="toc-2020-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2021" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2021"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.15</span> <span>2021</span> </div> </a> <ul id="toc-2021-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2022" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2022"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.16</span> <span>2022</span> </div> </a> <ul id="toc-2022-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2023" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2023"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.17</span> <span>2023</span> </div> </a> <ul id="toc-2023-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2024" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2024"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.18</span> <span>2024</span> </div> </a> <ul id="toc-2024-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-2025" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#2025"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.19</span> <span>2025</span> </div> </a> <ul id="toc-2025-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Measurement_of_reduction_in_electricity_use" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Measurement_of_reduction_in_electricity_use"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Measurement of reduction in electricity use</span> </div> </a> <ul id="toc-Measurement_of_reduction_in_electricity_use-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Reception" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Reception"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Reception</span> </div> </a> <ul id="toc-Reception-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Earth Hour</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 71 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-71" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">71 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D8%A7%D8%B9%D8%A9_%D8%A7%D9%84%D8%A3%D8%B1%D8%B6" title="ساعة الأرض – Arabic" lang="ar" hreflang="ar" data-title="ساعة الأرض" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%AB%DC%A5%DC%AC%DC%90_%DC%95%DC%90%DC%AA%DC%A5%DC%90" title="ܫܥܬܐ ܕܐܪܥܐ – Aramaic" lang="arc" hreflang="arc" data-title="ܫܥܬܐ ܕܐܪܥܐ" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="Aramaic" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Yer_saat%C4%B1" title="Yer saatı – Azerbaijani" lang="az" hreflang="az" data-title="Yer saatı" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A7%83%E0%A6%A5%E0%A6%BF%E0%A6%AC%E0%A7%80_%E0%A6%98%E0%A6%A3%E0%A7%8D%E0%A6%9F%E0%A6%BE" title="পৃথিবী ঘণ্টা – Bangla" lang="bn" hreflang="bn" data-title="পৃথিবী ঘণ্টা" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%93%D0%B0%D0%B4%D0%B7%D1%96%D0%BD%D0%B0_%D0%97%D1%8F%D0%BC%D0%BB%D1%96" title="Гадзіна Зямлі – Belarusian" lang="be" hreflang="be" data-title="Гадзіна Зямлі" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A7%D0%B0%D1%81_%D0%BD%D0%B0_%D0%97%D0%B5%D0%BC%D1%8F%D1%82%D0%B0" title="Час на Земята – Bulgarian" lang="bg" hreflang="bg" data-title="Час на Земята" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://bs.wikipedia.org/wiki/Sat_za_planetu_Zemlju" title="Sat za planetu Zemlju – Bosnian" lang="bs" hreflang="bs" data-title="Sat za planetu Zemlju" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Hora_del_planeta" title="Hora del planeta – Catalan" lang="ca" hreflang="ca" data-title="Hora del planeta" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Hodina_Zem%C4%9B" title="Hodina Země – Czech" lang="cs" hreflang="cs" data-title="Hodina Země" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Danish" lang="da" hreflang="da" data-title="Earth Hour" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – German" lang="de" hreflang="de" data-title="Earth Hour" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Maa_tund" title="Maa tund – Estonian" lang="et" hreflang="et" data-title="Maa tund" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%8F%CF%81%CE%B1_%CF%84%CE%B7%CF%82_%CE%93%CE%B7%CF%82" title="Ώρα της Γης – Greek" lang="el" hreflang="el" data-title="Ώρα της Γης" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Hora_del_Planeta" title="Hora del Planeta – Spanish" lang="es" hreflang="es" data-title="Hora del Planeta" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Horo_por_la_Tero" title="Horo por la Tero – Esperanto" lang="eo" hreflang="eo" data-title="Horo por la Tero" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%A7%D8%B9%D8%AA_%D8%B2%D9%85%DB%8C%D9%86" title="ساعت زمین – Persian" lang="fa" hreflang="fa" data-title="ساعت زمین" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – French" lang="fr" hreflang="fr" data-title="Earth Hour" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Uair_ar_son_an_Domhain" title="Uair ar son an Domhain – Irish" lang="ga" hreflang="ga" data-title="Uair ar son an Domhain" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-glk mw-list-item"><a href="https://glk.wikipedia.org/wiki/%D8%B2%D9%85%D9%8A%D9%86%CB%87_%D8%B3%D8%A7%D8%B9%D8%AA" title="زمينˇ ساعت – Gilaki" lang="glk" hreflang="glk" data-title="زمينˇ ساعت" data-language-autonym="گیلکی" data-language-local-name="Gilaki" class="interlanguage-link-target"><span>گیلکی</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%85%E0%AA%B0%E0%AB%8D%E0%AA%A5_%E0%AA%85%E0%AA%B5%E0%AA%B0" title="અર્થ અવર – Gujarati" lang="gu" hreflang="gu" data-title="અર્થ અવર" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A7%80%EA%B5%AC%EC%9D%98_%EC%8B%9C%EA%B0%84" title="지구의 시간 – Korean" lang="ko" hreflang="ko" data-title="지구의 시간" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B5%D6%80%D5%AF%D6%80%D5%AB_%D5%AA%D5%A1%D5%B4" title="Երկրի ժամ – Armenian" lang="hy" hreflang="hy" data-title="Երկրի ժամ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%85%E0%A4%B0%E0%A5%8D%E0%A4%A5_%E0%A4%85%E0%A4%B5%E0%A4%B0" title="अर्थ अवर – Hindi" lang="hi" hreflang="hi" data-title="अर्थ अवर" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://hr.wikipedia.org/wiki/Sat_za_planet_Zemlju" title="Sat za planet Zemlju – Croatian" lang="hr" hreflang="hr" data-title="Sat za planet Zemlju" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ig mw-list-item"><a href="https://ig.wikipedia.org/wiki/Oge_awa_%E1%BB%A5wa" title="Oge awa ụwa – Igbo" lang="ig" hreflang="ig" data-title="Oge awa ụwa" data-language-autonym="Igbo" data-language-local-name="Igbo" class="interlanguage-link-target"><span>Igbo</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Indonesian" lang="id" hreflang="id" data-title="Earth Hour" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ora_della_Terra" title="Ora della Terra – Italian" lang="it" hreflang="it" data-title="Ora della Terra" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%A2%D7%AA_%D7%9B%D7%93%D7%95%D7%A8_%D7%94%D7%90%D7%A8%D7%A5" title="שעת כדור הארץ – Hebrew" lang="he" hreflang="he" data-title="שעת כדור הארץ" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-pam mw-list-item"><a href="https://pam.wikipedia.org/wiki/Oras_ning_Yatu" title="Oras ning Yatu – Pampanga" lang="pam" hreflang="pam" data-title="Oras ning Yatu" data-language-autonym="Kapampangan" data-language-local-name="Pampanga" class="interlanguage-link-target"><span>Kapampangan</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%96%D0%B5%D1%80_%D1%81%D0%B0%D2%93%D0%B0%D1%82%D1%8B" title="Жер сағаты – Kazakh" lang="kk" hreflang="kk" data-title="Жер сағаты" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Zemes_stunda" title="Zemes stunda – Latvian" lang="lv" hreflang="lv" data-title="Zemes stunda" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/%C5%BDem%C4%97s_valanda" title="Žemės valanda – Lithuanian" lang="lt" hreflang="lt" data-title="Žemės valanda" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/A_F%C3%B6ld_%C3%B3r%C3%A1ja" title="A Föld órája – Hungarian" lang="hu" hreflang="hu" data-title="A Föld órája" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A7%D0%B0%D1%81_%D0%BD%D0%B0_%D0%97%D0%B5%D0%BC%D1%98%D0%B0%D1%82%D0%B0" title="Час на Земјата – Macedonian" lang="mk" hreflang="mk" data-title="Час на Земјата" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AD%E0%B5%97%E0%B4%AE_%E0%B4%AE%E0%B4%A3%E0%B4%BF%E0%B4%95%E0%B5%8D%E0%B4%95%E0%B5%82%E0%B5%BC" title="ഭൗമ മണിക്കൂർ – Malayalam" lang="ml" hreflang="ml" data-title="ഭൗമ മണിക്കൂർ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B3%D8%A7%D8%B9%D8%A9_%D8%A7%D9%84%D8%A7%D8%B1%D8%B6" title="ساعة الارض – Egyptian Arabic" lang="arz" hreflang="arz" data-title="ساعة الارض" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Malay" lang="ms" hreflang="ms" data-title="Earth Hour" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Dutch" lang="nl" hreflang="nl" data-title="Earth Hour" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%A2%E3%83%BC%E3%82%B9%E3%83%BB%E3%82%A2%E3%83%AF%E3%83%BC" title="アース・アワー – Japanese" lang="ja" hreflang="ja" data-title="アース・アワー" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Earth Hour" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Earth Hour" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%A7%E0%A8%B0%E0%A8%A4_%E0%A8%98%E0%A9%B0%E0%A8%9F%E0%A8%BE" title="ਧਰਤ ਘੰਟਾ – Punjabi" lang="pa" hreflang="pa" data-title="ਧਰਤ ਘੰਟਾ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%AF_%DA%81%D9%85%DA%A9%DB%90_%DA%AF%DA%93%DB%8D" title="د ځمکې گړۍ – Pashto" lang="ps" hreflang="ps" data-title="د ځمکې گړۍ" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-km mw-list-item"><a href="https://km.wikipedia.org/wiki/%E1%9E%98%E1%9F%89%E1%9F%84%E1%9E%84%E1%9E%95%E1%9F%82%E1%9E%93%E1%9E%8A%E1%9E%B8" title="ម៉ោងផែនដី – Khmer" lang="km" hreflang="km" data-title="ម៉ោងផែនដី" data-language-autonym="ភាសាខ្មែរ" data-language-local-name="Khmer" class="interlanguage-link-target"><span>ភាសាខ្មែរ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Godzina_dla_Ziemi" title="Godzina dla Ziemi – Polish" lang="pl" hreflang="pl" data-title="Godzina dla Ziemi" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Hora_do_Planeta" title="Hora do Planeta – Portuguese" lang="pt" hreflang="pt" data-title="Hora do Planeta" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ora_P%C4%83m%C3%A2ntului" title="Ora Pământului – Romanian" lang="ro" hreflang="ro" data-title="Ora Pământului" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A7%D0%B0%D1%81_%D0%97%D0%B5%D0%BC%D0%BB%D0%B8" title="Час Земли – Russian" lang="ru" hreflang="ru" data-title="Час Земли" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A1%D0%B8%D1%80_%D0%BA%D1%8D%D0%BC%D1%8D" title="Сир кэмэ – Yakut" lang="sah" hreflang="sah" data-title="Сир кэмэ" data-language-autonym="Саха тыла" data-language-local-name="Yakut" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Ora_e_Tok%C3%ABs" title="Ora e Tokës – Albanian" lang="sq" hreflang="sq" data-title="Ora e Tokës" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Simple English" lang="en-simple" hreflang="en-simple" data-title="Earth Hour" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Ura_za_Zemljo" title="Ura za Zemljo – Slovenian" lang="sl" hreflang="sl" data-title="Ura za Zemljo" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%A9%D8%A7%D8%AA%DA%98%D9%85%DB%8E%D8%B1%DB%8C_%D8%B2%DB%95%D9%88%DB%8C" title="کاتژمێری زەوی – Central Kurdish" lang="ckb" hreflang="ckb" data-title="کاتژمێری زەوی" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%B0%D1%82_%D0%B7%D0%B0_%D0%BD%D0%B0%D1%88%D1%83_%D0%BF%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D1%83" title="Сат за нашу планету – Serbian" lang="sr" hreflang="sr" data-title="Сат за нашу планету" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Sat_za_planet_Zemlju" title="Sat za planet Zemlju – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Sat za planet Zemlju" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Finnish" lang="fi" hreflang="fi" data-title="Earth Hour" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Earth_Hour" title="Earth Hour – Swedish" lang="sv" hreflang="sv" data-title="Earth Hour" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Oras_ng_Daigdig" title="Oras ng Daigdig – Tagalog" lang="tl" hreflang="tl" data-title="Oras ng Daigdig" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AF%81%E0%AE%B5%E0%AE%BF_%E0%AE%AE%E0%AE%A3%E0%AE%BF%E0%AE%A8%E0%AF%87%E0%AE%B0%E0%AE%AE%E0%AF%8D" title="புவி மணிநேரம் – Tamil" lang="ta" hreflang="ta" data-title="புவி மணிநேரம்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D2%96%D0%B8%D1%80_%D1%81%D3%99%D0%B3%D0%B0%D1%82%D0%B5" title="Җир сәгате – Tatar" lang="tt" hreflang="tt" data-title="Җир сәгате" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%8E%E0%B0%B0%E0%B1%8D%E0%B0%A4%E0%B1%8D_%E0%B0%85%E0%B0%B5%E0%B0%B0%E0%B1%8D" title="ఎర్త్ అవర్ – Telugu" lang="te" hreflang="te" data-title="ఎర్త్ అవర్" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%80%E0%B8%AD%E0%B8%B4%E0%B8%A3%E0%B9%8C%E0%B8%98%E0%B8%AD%E0%B8%B2%E0%B8%A7%E0%B9%80%E0%B8%AD%E0%B8%AD%E0%B8%A3%E0%B9%8C" title="เอิร์ธอาวเออร์ – Thai" lang="th" hreflang="th" data-title="เอิร์ธอาวเออร์" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/D%C3%BCnya_Saati" title="Dünya Saati – Turkish" lang="tr" hreflang="tr" data-title="Dünya Saati" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0_%D0%97%D0%B5%D0%BC%D0%BB%D1%96" title="Година Землі – Ukrainian" lang="uk" hreflang="uk" data-title="Година Землі" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%A7%D8%B1%D8%AA%DA%BE_%D8%A2%D9%88%D8%B1" title="ارتھ آور – Urdu" lang="ur" hreflang="ur" data-title="ارتھ آور" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Gi%E1%BB%9D_Tr%C3%A1i_%C4%90%E1%BA%A5t" title="Giờ Trái Đất – Vietnamese" lang="vi" hreflang="vi" data-title="Giờ Trái Đất" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Oras_para_han_Kalibutan" title="Oras para han Kalibutan – Waray" lang="war" hreflang="war" data-title="Oras para han Kalibutan" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%9C%B0%E7%90%83%E4%B8%80%E5%B0%8F%E6%97%B6" title="地球一小时 – Wu" lang="wuu" hreflang="wuu" data-title="地球一小时" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%9C%B0%E7%90%83%E4%B8%80%E5%80%8B%E9%90%98" title="地球一個鐘 – Cantonese" lang="yue" hreflang="yue" data-title="地球一個鐘" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/%C5%BDem%C4%97s_ad%C4%ABna" title="Žemės adīna – Samogitian" lang="sgs" hreflang="sgs" data-title="Žemės adīna" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%9C%B0%E7%90%83%E4%B8%80%E5%B0%8F%E6%97%B6" title="地球一小时 – Chinese" lang="zh" hreflang="zh" data-title="地球一小时" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q160145#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul 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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Annual symbolic environmental event</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/Earth_Day" title="Earth Day">Earth Day</a>.</div> <p class="mw-empty-elt"> </p> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><tbody><tr><th colspan="2" class="infobox-above hd" style="background-color: transparent">Earth Hour</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:EH_Logo_stacked_RGB.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/EH_Logo_stacked_RGB.jpg/240px-EH_Logo_stacked_RGB.jpg" decoding="async" width="240" height="240" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/EH_Logo_stacked_RGB.jpg/360px-EH_Logo_stacked_RGB.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6a/EH_Logo_stacked_RGB.jpg/480px-EH_Logo_stacked_RGB.jpg 2x" data-file-width="1800" data-file-height="1800" /></a></span></td></tr><tr><th scope="row" class="infobox-label">Observed by</th><td class="infobox-data">World Wildlife Fund for Nature (WWF)</td></tr><tr><th scope="row" class="infobox-label">Type</th><td class="infobox-data">International, Movement, World Wildlife Fund (WWF)</td></tr><tr><th scope="row" class="infobox-label">Significance</th><td class="infobox-data summary">Climate change and to save Earth</td></tr><tr><th scope="row" class="infobox-label">Celebrations</th><td class="infobox-data">Mass activations to encourage the public to give an hour for the planet; Switching off national and international monuments and landmarks</td></tr><tr><th scope="row" class="infobox-label">Begins</th><td class="infobox-data">8:30 pm</td></tr><tr><th scope="row" class="infobox-label">Ends</th><td class="infobox-data">9:30 pm</td></tr><tr><th scope="row" class="infobox-label">Date</th><td class="infobox-data">Last or penultimate Saturday of March</td></tr><tr><th scope="row" class="infobox-label">2024 date</th><td class="infobox-data">March 23</td></tr><tr><th scope="row" class="infobox-label">2025 date</th><td class="infobox-data">March 22</td></tr><tr><th scope="row" class="infobox-label">2026 date</th><td class="infobox-data">March 28</td></tr><tr><th scope="row" class="infobox-label">2027 date</th><td class="infobox-data">March 20</td></tr><tr><th scope="row" class="infobox-label">Frequency</th><td class="infobox-data">Annual</td></tr><tr><th scope="row" class="infobox-label">Related to</th><td class="infobox-data"><a href="/wiki/Earth_Day" title="Earth Day">Earth Day</a></td></tr></tbody></table> <p><b>Earth Hour</b> is a worldwide movement organized by the <a href="/wiki/World_Wide_Fund_for_Nature" title="World Wide Fund for Nature">World Wildlife Fund</a> (WWF). The event is held annually, encouraging the individuals, communities, and businesses to give an hour for Earth, and additionally marked by landmarks and businesses switching off non-essential electric lights, for one hour from 8:30 to 9:30 p.m., usually on the last Saturday of March, as a symbol of commitment to the planet.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> It was started as a lights-off event in <a href="/wiki/Sydney" title="Sydney">Sydney</a>, Australia, in 2007. </p><p>Occasionally, in years when <a href="/wiki/Holy_Saturday" title="Holy Saturday">Holy Saturday</a> falls on the last Saturday of March (as in 2024), Earth Hour is held a week earlier. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History_of_Earth_Hour">History of Earth Hour</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=1" title="Edit section: History of Earth Hour"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Conception_and_start:_2004–2007"><span id="Conception_and_start:_2004.E2.80.932007"></span>Conception and start: 2004–2007</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=2" title="Edit section: Conception and start: 2004–2007"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 2004, confronted with scientific findings, WWF Australia met with advertising agency <a href="/wiki/Leo_Burnett_Worldwide" title="Leo Burnett Worldwide">Leo Burnett Sydney</a> to "discuss ideas for engaging Australians on the issue of climate change".<sup id="cite_ref-earthhour1_2-0" class="reference"><a href="#cite_note-earthhour1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The idea of a large scale switch off was coined and developed in 2006, originally under the working title "The Big Flick". WWF Australia presented their concept to <a href="/wiki/Fairfax_Media" title="Fairfax Media">Fairfax Media</a> who, along with Sydney Lord Mayor <a href="/wiki/Clover_Moore" title="Clover Moore">Clover Moore</a>, agreed to back the event.<sup id="cite_ref-earthhour1_2-1" class="reference"><a href="#cite_note-earthhour1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The 2007 Earth Hour was held on March 31 in Sydney, Australia at 7:30 pm, local time. </p><p>In October 2007, <a href="/wiki/San_Francisco" title="San Francisco">San Francisco</a> ran its own "Lights Out" program inspired by the Sydney Earth Hour.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> After their successful event in October, the organizers decided to rally behind the Earth Hour being planned for March 2008.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2008">2008</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=3" title="Edit section: 2008"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sydney_Opera_House_-_After.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Sydney_Opera_House_-_After.jpg/250px-Sydney_Opera_House_-_After.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Sydney_Opera_House_-_After.jpg/330px-Sydney_Opera_House_-_After.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Sydney_Opera_House_-_After.jpg/500px-Sydney_Opera_House_-_After.jpg 2x" data-file-width="3474" data-file-height="2316" /></a><figcaption>Overview of Sydney during Earth Hour 2008</figcaption></figure> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Wikinews-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/40px-Wikinews-logo.svg.png" decoding="async" width="40" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/60px-Wikinews-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/80px-Wikinews-logo.svg.png 2x" data-file-width="759" data-file-height="415" /></a></span></div> <div class="side-box-text plainlist">Wikinews has related news: <div><ul><li><a href="https://en.wikinews.org/wiki/Businesses_and_individuals_worldwide_turn_lights_off_as_part_of_Earth_Hour_2008" class="extiw" title="wikinews:Businesses and individuals worldwide turn lights off as part of Earth Hour 2008"> Businesses and individuals worldwide turn lights off as part of Earth Hour 2008</a></li></ul></div></div></div> </div> <p>Earth Hour 2008 was held internationally on March 29, 2008, from 8 p.m. to 9 p.m. local time, marking the first anniversary of the event. Thirty five countries around the world participated as official flagship cities and over 400 cities also supported. Landmarks around the world turned off their non-essential lighting for Earth Hour. Some websites took part in the event, with <a href="/wiki/Google" title="Google">Google</a>'s homepage going "dark" on the day.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>According to a <a href="/wiki/Zogby_International" class="mw-redirect" title="Zogby International">Zogby International</a> online survey, 36 million Americans—approximately 16% of the United States adult population—participated in Earth Hour 2008. The survey also showed there was a 4 percentage point increase in the level of interest in environmental issues such as climate change and pollution directly after the event (73 percent pre-event versus 77 percent post-event).<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg/220px-Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg" decoding="async" width="220" height="138" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg/330px-Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg/440px-Sydney_Harbour_Bridge_and_Opera_House_Earth_Hour.jpg 2x" data-file-width="1000" data-file-height="629" /></a><figcaption><a href="/wiki/Sydney_Harbour_Bridge" title="Sydney Harbour Bridge">Sydney Harbour Bridge</a> and <a href="/wiki/Sydney_Opera_House" title="Sydney Opera House">Sydney Opera House</a> were darkened during Earth Hour 2007.</figcaption></figure> <p><a href="/wiki/Tel_Aviv" title="Tel Aviv">Tel Aviv</a> scheduled their Earth Hour for Thursday March 27, 2008 to avoid conflict with <a href="/wiki/Shabbat" title="Shabbat">Sabbath</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Dublin" title="Dublin">Dublin</a> moved their Earth Hour to between 9 and 10 p.m. due to their northern geographical location.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:AzrieliCenterEarthHour2010.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a7/AzrieliCenterEarthHour2010.png/220px-AzrieliCenterEarthHour2010.png" decoding="async" width="220" height="163" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a7/AzrieliCenterEarthHour2010.png/330px-AzrieliCenterEarthHour2010.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a7/AzrieliCenterEarthHour2010.png/440px-AzrieliCenterEarthHour2010.png 2x" data-file-width="1040" data-file-height="771" /></a><figcaption><a href="/wiki/Azrieli_Center" title="Azrieli Center">Azrieli Center</a> in <a href="/wiki/Tel_Aviv" title="Tel Aviv">Tel Aviv</a> darkened for Earth Hour 2010.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Colosseum_Earth_Hour.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Colosseum_Earth_Hour.jpg/220px-Colosseum_Earth_Hour.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Colosseum_Earth_Hour.jpg/330px-Colosseum_Earth_Hour.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/58/Colosseum_Earth_Hour.jpg/440px-Colosseum_Earth_Hour.jpg 2x" data-file-width="4368" data-file-height="2912" /></a><figcaption><a href="/wiki/Colosseum" title="Colosseum">Colosseum</a> darkened for Earth Hour 2008</figcaption></figure> <p>According to WWF Thailand, <a href="/wiki/Bangkok" title="Bangkok">Bangkok</a> decreased electricity usage by 73.34 <a href="/wiki/Megawatts" class="mw-redirect" title="Megawatts">megawatts</a>, which, <a href="/wiki/Megawatt-hour" class="mw-redirect" title="Megawatt-hour">over one hour</a>, is equivalent to 41.6 <a href="/wiki/Tonnes" class="mw-redirect" title="Tonnes">tonnes</a> of <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> The <i>Bangkok Post</i> gave different figures of 165 <a href="/wiki/Megawatt-hours" class="mw-redirect" title="Megawatt-hours">megawatt-hours</a> and 102 tonnes of carbon dioxide. This was noted to be significantly less than a similar campaign initiated by <a href="/wiki/Bangkok" title="Bangkok">Bangkok</a>'s City Hall the previous year in May, when 530 megawatt-hours were saved and 143 tonnes of <a href="/wiki/Carbon_dioxide_emission" class="mw-redirect" title="Carbon dioxide emission">carbon dioxide emission</a> were cut.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>Philippine Electricity Market Corp. noted that power consumption dropped by about 78.63 megawatts in <a href="/wiki/Metro_Manila" title="Metro Manila">Metro Manila</a>, and up to 102.2 megawatts on <a href="/wiki/Luzon" title="Luzon">Luzon</a>.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> The maximum demand drop of around 39 MW was experienced at 8:14 p.m. in Metro Manila and of around 116 MW at 8:34 p.m. in the Luzon grid.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Ontario" title="Ontario">Ontario</a> used approximately 900 megawatt-hours less electrical energy during Earth Hour. At one point, <a href="/wiki/Toronto" title="Toronto">Toronto</a> saw an 8.7% reduction in consumption as compared to a typical March Saturday night.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p><p>Ireland, as a whole, had a reduction in electricity use of about 1.5% for the evening.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> In the three-hour period between 6:30 p.m. and 9:30 pm, there was a reduction of 50 megawatts, saving 150 megawatt-hours, or approximately 60 tonnes of carbon dioxide.<sup id="cite_ref-continuation_15-0" class="reference"><a href="#cite_note-continuation-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p><p>In <a href="/wiki/Dubai" title="Dubai">Dubai</a>, where external lighting on several major city landmarks was turned off and street lighting in selected areas was dimmed by 50%, the Electricity and Water Authority reported savings of 100 megawatt-hours of electricity. This represented a 2.4% reduction in demand compared to before the hour began.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Earth_Hour_Sky_Tower_Auckland.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/Earth_Hour_Sky_Tower_Auckland.jpg/220px-Earth_Hour_Sky_Tower_Auckland.jpg" decoding="async" width="220" height="214" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/Earth_Hour_Sky_Tower_Auckland.jpg/330px-Earth_Hour_Sky_Tower_Auckland.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/82/Earth_Hour_Sky_Tower_Auckland.jpg/440px-Earth_Hour_Sky_Tower_Auckland.jpg 2x" data-file-width="1053" data-file-height="1022" /></a><figcaption>The <a href="/wiki/Sky_Tower_(Auckland)" title="Sky Tower (Auckland)">Sky Tower</a> in <a href="/wiki/Auckland" title="Auckland">Auckland</a>, New Zealand, switched off its usual floodlighting during the Earth Hour, and re-lit afterwards. (the red lights in the middle image are <a href="/wiki/Aircraft_warning_lights" class="mw-redirect" title="Aircraft warning lights">aircraft warning lights</a>) </figcaption></figure> <p>The best result was from <a href="/wiki/Christchurch" title="Christchurch">Christchurch</a>, New Zealand, with the city reporting a drop of 13% in electricity demand. However, national grid operator <a href="/wiki/Transpower_New_Zealand_Limited" class="mw-redirect" title="Transpower New Zealand Limited">Transpower</a> reported that New Zealand's power consumption during Earth Hour was 335 megawatts, higher than the 328 megawatt average of the previous two Saturdays.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Melbourne" title="Melbourne">Melbourne</a>, Australia reduced demand by 10.1%. Sydney, being the city that participated in both the 2007 and 2008 Earth Hours, cut electricity consumption by 8.4%. This is less than the previous year's 10.2%; however, Earth Hour executive director Andy Ridley made the claim that after factoring <a href="/wiki/Margin_of_error" title="Margin of error">margin of error</a>, the participation in this city was the same.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>The worst result was from <a href="/wiki/Calgary" title="Calgary">Calgary</a>, Canada. The city's power consumption actually went up 3.6% at the hour's peak electricity demand.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> Calgary's weather plays a large role in power consumption, and the city experienced weather 12 °C (around 22 °F) colder than the previous Saturday's recorded temperature in the inaugural year.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Enmax" title="Enmax">Enmax</a>, the city's power supplier, has confirmed that in all subsequent years, Calgarians have not supported the Earth Hour initiative, noting that power consumption changed only marginally during the hour in 2010 and 2011 (1% or less) and in 2012 and 2013 showed no appreciable change in power usage at all.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2009">2009</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=4" title="Edit section: 2009"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1235681985" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237033735" /><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409" /> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Wikinews-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/40px-Wikinews-logo.svg.png" decoding="async" width="40" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/60px-Wikinews-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/80px-Wikinews-logo.svg.png 2x" data-file-width="759" data-file-height="415" /></a></span></div> <div class="side-box-text plainlist">Wikinews has related news: <div><ul><li><a href="https://en.wikinews.org/wiki/Businesses_and_individuals_worldwide_to_turn_lights_off_as_part_of_Earth_Hour_2009" class="extiw" title="wikinews:Businesses and individuals worldwide to turn lights off as part of Earth Hour 2009"> Businesses and individuals worldwide to turn lights off as part of Earth Hour 2009</a></li></ul></div></div></div> </div> <p>Earth Hour 2009 was from 8:30 p.m. to 9:30 p.m. local time, March 28, 2009. The campaign was titled "Vote Earth" and was dubbed "the world's first global vote" with one billion votes was the stated aim for Earth Hour 2009,<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> in the context of the pivotal <a href="/wiki/2009_United_Nations_Climate_Change_Conference" class="mw-redirect" title="2009 United Nations Climate Change Conference">2009 United Nations Climate Change Conference</a>. WWF reported that 88 countries and 4,159 cities participated in Earth Hour 2009,<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> ten times more cities than Earth Hour 2008 had (2008 saw 400 cities participate). </p><p>Among the participants in 2009 was, for the first time, the <a href="/wiki/United_Nations_Headquarters" class="mw-redirect" title="United Nations Headquarters">United Nations Headquarters</a> in New York City.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> </p><p>In Egypt, the lights went out on the <a href="/wiki/Sphinx" title="Sphinx">Sphinx</a> and the <a href="/wiki/Great_Pyramids_of_Giza" class="mw-redirect" title="Great Pyramids of Giza">Great Pyramids of Giza</a> from 8:30 to 9:30 pm.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Philippines" title="Philippines">Philippines</a> saw participation from 647 cities and towns; over 10 million Filipinos were estimated to have joined in the hour-long lights-off.<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> This was followed by Greece with 484 cities and towns participating, and Australia with 309.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> </p><p>Despite official organizers WWF stating that the event is not about the reduction in electricity, a number of public institutions reported on electricity savings in their cities to see participation numbers. The <a href="/wiki/Canadian_province" class="mw-redirect" title="Canadian province">Canadian province</a> of <a href="/wiki/Ontario" title="Ontario">Ontario</a>, excluding the city of <a href="/wiki/Toronto" title="Toronto">Toronto</a>, saw a decrease of 6% in electricity usage while Toronto saw a decrease of 15.1% (nearly doubled from 8.7% the previous year) as many businesses darkened, including the landmark <a href="/wiki/CN_Tower" title="CN Tower">CN Tower</a>.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Philippines" title="Philippines">Philippines</a> was able to save 611 MWh of electricity during the time period, which is said to be equivalent to shutting down a dozen coal-fired power plants for an hour.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p><p>Swedish electricity operator <a href="/wiki/Svenska_Kraftn%C3%A4t" class="mw-redirect" title="Svenska Kraftnät">Svenska Kraftnät</a> recorded a 2.1% decrease in power consumption from its projected figure between 8 p.m. and 9 pm. The following hour, the corresponding number was 5%.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> This is equivalent to the consumption of approximately half a million households out of the total 4.5 million households in Sweden.<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> </p><p>According to the National Power Dispatch Centre, <a href="/wiki/Vietnam" title="Vietnam">Vietnam</a>'s electricity demand fell 140 <a href="/wiki/MWh" class="mw-redirect" title="MWh">MWh</a> during Earth Hour.<sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2010">2010</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=5" title="Edit section: 2010"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Botanical_Garden_of_Curitiba,_Paran%C3%A1,_Brazil_(Earth_Hour_2010).gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Botanical_Garden_of_Curitiba%2C_Paran%C3%A1%2C_Brazil_%28Earth_Hour_2010%29.gif/220px-Botanical_Garden_of_Curitiba%2C_Paran%C3%A1%2C_Brazil_%28Earth_Hour_2010%29.gif" decoding="async" width="220" height="148" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Botanical_Garden_of_Curitiba%2C_Paran%C3%A1%2C_Brazil_%28Earth_Hour_2010%29.gif/330px-Botanical_Garden_of_Curitiba%2C_Paran%C3%A1%2C_Brazil_%28Earth_Hour_2010%29.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Botanical_Garden_of_Curitiba%2C_Paran%C3%A1%2C_Brazil_%28Earth_Hour_2010%29.gif/440px-Botanical_Garden_of_Curitiba%2C_Paran%C3%A1%2C_Brazil_%28Earth_Hour_2010%29.gif 2x" data-file-width="480" data-file-height="322" /></a><figcaption>The metal structure of the <a href="/wiki/Greenhouse" title="Greenhouse">greenhouses</a> of the <a href="/wiki/Botanical_Garden_of_Curitiba" title="Botanical Garden of Curitiba">curitiban Botanic Garden</a> (<a href="/wiki/Curitiba" title="Curitiba">Curitiba</a>, Paraná, Southern Brazil), with its lights off on March 27, 2010</figcaption></figure> <p>Earth Hour 2010 was held from 8:30 p.m. to 9:30 p.m. local time on March 27.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> In Israel, the hour was held on April 22.<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> </p><p>126 countries participated in Earth Hour 2010.<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> </p><p>In the United States polling showed that an estimated 90,000,000 Americans participated in Earth Hour as lights were turned off around the country, including landmarks such as <a href="/wiki/Mount_Rushmore" title="Mount Rushmore">Mount Rushmore</a>, the <a href="/wiki/Las_Vegas_Strip" title="Las Vegas Strip">Las Vegas Strip</a>, the <a href="/wiki/Empire_State_Building" title="Empire State Building">Empire State Building</a> and <a href="/wiki/Niagara_Falls" title="Niagara Falls">Niagara Falls</a>. </p><p>Some cities and landmarks took the opportunity to make more long-term adjustments to their everyday power consumption. In <a href="/wiki/Chicago" title="Chicago">Chicago</a>, the Building Owners and Managers Association (BOMA) developed lighting guidelines to reduce light pollution and reduce the carbon footprint of downtown buildings. <a href="/wiki/Mount_Rushmore" title="Mount Rushmore">Mount Rushmore</a> in <a href="/wiki/South_Dakota" title="South Dakota">South Dakota</a> started powering down each night around 9 p.m. instead of 11 p.m. </p><p>In <a href="/wiki/Vietnam" title="Vietnam">Vietnam</a>, electricity demand fell 500,000 kWh during Earth Hour 2010, which was three times larger than the first time the country joined the event in 2009.<sup id="cite_ref-37" class="reference"><a href="#cite_note-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p><p>In the Philippines, 1,067 towns and cities pledged participation in 2010 and over 15 million Filipinos participated in the event. </p><p>About 4,000 cities participated, including landmarks such as <a href="/wiki/Big_Ben" title="Big Ben">Big Ben</a>, the <a href="/wiki/Empire_State_Building" title="Empire State Building">Empire State Building</a>, the <a href="/wiki/Sydney_Opera_House" title="Sydney Opera House">Sydney Opera House</a>, the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a>, the <a href="/wiki/Parthenon" title="Parthenon">Parthenon</a>, the <a href="/wiki/Brandenburg_Gate" title="Brandenburg Gate">Brandenburg Gate</a>, and the <a href="/wiki/Forbidden_City" title="Forbidden City">Forbidden City</a>.<sup id="cite_ref-38" class="reference"><a href="#cite_note-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2011">2011</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=6" title="Edit section: 2011"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2011 was the biggest year in the campaign's five-year history, reaffirming it as the largest ever voluntary action for the environment. In 2011, the tagline "Beyond the Hour" was adopted by organizers as a way to encourage people to take their commitment to the cause beyond the 60-minute event. Together with agency Leo Burnett, Earth Hour unveiled an updated planet themed logo that included a small plus symbol to the right of the signature "60" which was used in previous years. The 60+ symbol continues to be the main logo used by campaign organizers around the world. </p><p>Earth Hour 2011 took place in a record 5,251 cities and towns in 135 countries and territories on all seven continents.<sup id="cite_ref-39" class="reference"><a href="#cite_note-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> It had an estimated reach of 1.8 billion people across the globe. In addition to this, the campaign's digital footprint grew to 91 million.<sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> </p><p>In <a href="/wiki/India" title="India">India</a>, Earth Hour 2011 was held on March 26, 2011, from 8:30 p.m. to 9:30 pm. IST, flagged off by the <a href="/wiki/Chief_Minister_of_Delhi" class="mw-redirect" title="Chief Minister of Delhi">Chief Minister of Delhi</a> <a href="/wiki/Sheila_Dikshit" title="Sheila Dikshit">Sheila Dikshit</a> and Earth Hour 2011 Ambassador and Bollywood actress <a href="/wiki/Vidya_Balan" title="Vidya Balan">Vidya Balan</a> in the presence of Jim Leape, Director General, WWF International.<sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> Rosebowl channel suspended broadcasting from 8.30 p.m. to 9.30 p.m. to mark the observance of Earth Hour.<sup id="cite_ref-:0_42-0" class="reference"><a href="#cite_note-:0-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> </p><p>In Azerbaijan, <a href="/wiki/Maiden_Tower_(Baku)" title="Maiden Tower (Baku)">Maiden Tower</a> darkened for Earth Hour.<sup id="cite_ref-43" class="reference"><a href="#cite_note-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> </p><p>The Philippines, which has been an active participant of the Earth Hour, had an early "earth hour" when power was accidentally interrupted,<sup id="cite_ref-44" class="reference"><a href="#cite_note-44"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup> plunging Metro Manila and nearby <a href="/wiki/Provinces_of_the_Philippines" title="Provinces of the Philippines">provinces</a> into darkness. After power was restored, major buildings, commercial centers and residential areas in Metro Manila and most <a href="/wiki/Provinces_of_the_Philippines" title="Provinces of the Philippines">provinces</a> continued to turn off their lights, while participating channels in the Philippines, ABS-CBN, Nickelodeon and Cartoon Network halted their transmissions for an hour.<sup id="cite_ref-:0_42-1" class="reference"><a href="#cite_note-:0-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-45" class="reference"><a href="#cite_note-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> </p><p>Thirty provinces and cities in Vietnam took part in Earth Hour 2011 with the main event held in <a href="/wiki/Nha_Trang" title="Nha Trang">Nha Trang</a>. The nation's electricity demand fell 400,000 kWh, one-fifth less than the previous year's. Vietnam managed to save 500 million <a href="/wiki/VND" class="mw-redirect" title="VND">VND</a> (US$23,809) thanks to the saved power.<sup id="cite_ref-46" class="reference"><a href="#cite_note-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup> </p><p>YouTube promoted the Earth Hour by changing its logo, and by adding a switch on/off feature near the title of each video, so that users could change the background colour from white to black.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2019)">citation needed</span></a></i>]</sup> </p><p>One of the least co-operative areas traditionally has been <a href="/wiki/Alberta" title="Alberta">Alberta</a>; in 2008, Calgary's power consumption went up during Earth Hour. The trend continued in 2011 when <a href="/wiki/Edmonton" title="Edmonton">Edmonton</a>'s power usage also increased. While <a href="/wiki/Calgary" title="Calgary">Calgary</a>'s power usage went down in 2011 during the event, electricity officials could not distinguish their readings between normal usage and a conscious attempt to participate.<sup id="cite_ref-47" class="reference"><a href="#cite_note-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2012">2012</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=7" title="Edit section: 2012"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour Global headquarters was moving from Sydney to Singapore in February 2012. A launch event took place at ION Orchard on February 20, with the move supported by Singapore's <a href="/wiki/Economic_Development_Board" title="Economic Development Board">Economic Development Board</a> (EDB) and WWF-Singapore.<sup id="cite_ref-48" class="reference"><a href="#cite_note-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> </p><p>Earth Hour 2012 was observed on March 31, 2012, from 8:30 p.m. to 9:30 p.m. (participants' local time).<sup id="cite_ref-49" class="reference"><a href="#cite_note-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup> It took place in more than 7000 cities and towns across 152 countries and territories, making it the biggest growth year for the campaign since 2009. It was also the first year that Earth Hour was celebrated in space, with Dutch astronaut <a href="/wiki/Andr%C3%A9_Kuipers" title="André Kuipers">André Kuipers</a> tweeting at various moments during the event's trek around the globe.<sup id="cite_ref-50" class="reference"><a href="#cite_note-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2013">2013</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=8" title="Edit section: 2013"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG/250px-Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG/330px-Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG/500px-Ora_della_Terra_Verona_Piazza_Bra_Arena_2013_WWF_Verona_Paolo_Villa_9954.JPG 2x" data-file-width="3452" data-file-height="2592" /></a><figcaption>Italy, Verona, Arena with backlight off on square Bra, in the bottom Town Hall during Earth Hour 2013</figcaption></figure> <p>Earth Hour 2013 was held across the world on Saturday, March 23 at 8:30 p.m. to 9:30 p.m. local time<sup id="cite_ref-51" class="reference"><a href="#cite_note-51"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup> to avoid taking place after <a href="/wiki/European_Summer_Time" class="mw-redirect" title="European Summer Time">European Summer Time</a> began, ensuring a greater impact for the lights-off event. It was also changed to avoid coinciding with the Christian Holy Saturday, which fell on March 30 of that year.<sup id="cite_ref-52" class="reference"><a href="#cite_note-52"><span class="cite-bracket">[</span>52<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading4"><h4 id="Africa">Africa</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=9" title="Edit section: Africa"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 2013, the world's first Earth Hour Forest began in Uganda, an ongoing project that aims to restore 2700 hectares of degraded land. Standard Chartered Bank-Uganda pledged to help fill the forest with more than 250,000 trees.<sup id="cite_ref-53" class="reference"><a href="#cite_note-53"><span class="cite-bracket">[</span>53<span class="cite-bracket">]</span></a></sup> </p><p>Earth Hour commemorations in Madagascar had as their highlight the distribution of one thousand wood-saving stoves to victims of the cyclone Haruna in the southern town of Toliara, extensively damaged in the February 22 storm. WWF-Madagascar and ADES (Association pour le Développement de l'Energie Solaire) distributed an additional 2,200 wood-saving stoves later that year. </p><p>Former President of <a href="/wiki/Botswana" title="Botswana">Botswana</a>, <a href="/wiki/Festus_Mogae" title="Festus Mogae">Festus Mogae</a> promised to plant one million <a href="/wiki/Indigenous_(ecology)" class="mw-redirect" title="Indigenous (ecology)">indigenous trees</a> over four years, as part of his "I Will If You Will" challenge for Earth 2013.<sup id="cite_ref-54" class="reference"><a href="#cite_note-54"><span class="cite-bracket">[</span>54<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading4"><h4 id="Europe">Europe</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=10" title="Edit section: Europe"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>WWF-Russia launched its 2013 campaign aiming to secure more than 100,000 signatures from Russian citizens to petition for amendments to the current forest legislation. The petition reached more than 127,000 signatures before the Earth Hour event, ensuring the legislation was debated in the State Duma by politicians.<sup id="cite_ref-55" class="reference"><a href="#cite_note-55"><span class="cite-bracket">[</span>55<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2014">2014</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=11" title="Edit section: 2014"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2014 took place on Saturday, March 29, during the same 8:30 to 9:30 p.m. local timeslot. Earth Hour Blue was launched as a global crowdfunding and crowdsourcing platform for the planet.<sup id="cite_ref-56" class="reference"><a href="#cite_note-56"><span class="cite-bracket">[</span>56<span class="cite-bracket">]</span></a></sup> "It is all about the collective effort of individuals around the world getting together to help fund or add their voice to support on-the-ground environmental and social projects that deliver real outcomes."<sup id="cite_ref-57" class="reference"><a href="#cite_note-57"><span class="cite-bracket">[</span>57<span class="cite-bracket">]</span></a></sup> </p><p>The Earth Hour 2014 Report<sup id="cite_ref-58" class="reference"><a href="#cite_note-58"><span class="cite-bracket">[</span>58<span class="cite-bracket">]</span></a></sup> highlighted a broad range of environmental outcomes achieved by the movement across 162 countries and territories around the world. More than US$60,000 was raised on the Earth Hour Blue platform for grassroots environmental projects run by WWF. The movement also saw campaigns to help protect Australia's Great Barrier Reef,<sup id="cite_ref-59" class="reference"><a href="#cite_note-59"><span class="cite-bracket">[</span>59<span class="cite-bracket">]</span></a></sup> the launch of a Blue Sky App in China,<sup id="cite_ref-60" class="reference"><a href="#cite_note-60"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-61" class="reference"><a href="#cite_note-61"><span class="cite-bracket">[</span>61<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-62" class="reference"><a href="#cite_note-62"><span class="cite-bracket">[</span>62<span class="cite-bracket">]</span></a></sup> and the delivery of thousands of wood efficient stoves to communities in Madagascar.<sup id="cite_ref-63" class="reference"><a href="#cite_note-63"><span class="cite-bracket">[</span>63<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-64" class="reference"><a href="#cite_note-64"><span class="cite-bracket">[</span>64<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2015">2015</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=12" title="Edit section: 2015"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2015 took place on Saturday, March 28, again between 8:30 and 9:30 p.m. local time.<sup id="cite_ref-earthhour2_65-0" class="reference"><a href="#cite_note-earthhour2-65"><span class="cite-bracket">[</span>65<span class="cite-bracket">]</span></a></sup> The tagline for the global campaign was "Change Climate Change", returning to the movement's original focus to initiate citizen action on global warming. A day before the event, over 170 countries and territories had confirmed their participation; with more than 1200 landmarks and close to 40 UNESCO world heritage sites set for the switch off.<sup id="cite_ref-66" class="reference"><a href="#cite_note-66"><span class="cite-bracket">[</span>66<span class="cite-bracket">]</span></a></sup> </p><p>For the second year running, Earth Hour Blue aims to raise funds for WWF organized climate focused projects on a crowdfunding platform.<sup id="cite_ref-67" class="reference"><a href="#cite_note-67"><span class="cite-bracket">[</span>67<span class="cite-bracket">]</span></a></sup> This year, crowdfunding projects include solar light distribution in the Philippines<sup id="cite_ref-68" class="reference"><a href="#cite_note-68"><span class="cite-bracket">[</span>68<span class="cite-bracket">]</span></a></sup> and India,<sup id="cite_ref-69" class="reference"><a href="#cite_note-69"><span class="cite-bracket">[</span>69<span class="cite-bracket">]</span></a></sup> and wildlife based projects from Colombia,<sup id="cite_ref-70" class="reference"><a href="#cite_note-70"><span class="cite-bracket">[</span>70<span class="cite-bracket">]</span></a></sup> Uganda and Indonesia.<sup id="cite_ref-71" class="reference"><a href="#cite_note-71"><span class="cite-bracket">[</span>71<span class="cite-bracket">]</span></a></sup> </p><p>Uniquely participating in the Earth Hour activity are the inhabitants of an island called <a href="/wiki/Sibuyan" class="mw-redirect" title="Sibuyan">Sibuyan</a> in the Philippines who turned on their lights to elevate the message of using renewable energy. The island's source of electricity is a mini-hydro power plant.<sup id="cite_ref-72" class="reference"><a href="#cite_note-72"><span class="cite-bracket">[</span>72<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2016">2016</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=13" title="Edit section: 2016"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2016 was on Saturday, March 19, from 8:30 p.m. to 9:30 p.m. during participants' local time. It was also changed to avoid coinciding with the Christian Holy Saturday, which fell on March 26 of that year.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2019)">citation needed</span></a></i>]</sup> It was the 10th anniversary of the campaign's beginnings in Sydney, Australia. Östersund in Sweden cancelled the 2016 event, following a spate of sex attacks, highlighting safety as a subject for discussion when saving resources.<sup id="cite_ref-73" class="reference"><a href="#cite_note-73"><span class="cite-bracket">[</span>73<span class="cite-bracket">]</span></a></sup> Almost all the countries in the world observed Earth Hour.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2019)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading3"><h3 id="2017">2017</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=14" title="Edit section: 2017"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour occurred on Saturday, March 25 from 8:30 pm to 9:30 pm.<sup id="cite_ref-74" class="reference"><a href="#cite_note-74"><span class="cite-bracket">[</span>74<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-75" class="reference"><a href="#cite_note-75"><span class="cite-bracket">[</span>75<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2018">2018</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=15" title="Edit section: 2018"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2018 took place on March 24, from 8:30 p.m. to 9:30 p.m. in participants' time,<sup id="cite_ref-76" class="reference"><a href="#cite_note-76"><span class="cite-bracket">[</span>76<span class="cite-bracket">]</span></a></sup> in order to avoid coinciding with Christian Holy Saturday which fell on March 31.<sup id="cite_ref-77" class="reference"><a href="#cite_note-77"><span class="cite-bracket">[</span>77<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2019">2019</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=16" title="Edit section: 2019"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2019 was held on March 30, from 8:30 p.m. to 9:30 pm. A total of 188 countries participated in Earth Hour 2019.<sup id="cite_ref-twitter.com_78-0" class="reference"><a href="#cite_note-twitter.com-78"><span class="cite-bracket">[</span>78<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-79" class="reference"><a href="#cite_note-79"><span class="cite-bracket">[</span>79<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Miss_Earth_2018" title="Miss Earth 2018">Miss Earth 2018</a> <a href="/wiki/Nguy%E1%BB%85n_Ph%C6%B0%C6%A1ng_Kh%C3%A1nh" title="Nguyễn Phương Khánh">Nguyễn Phương Khánh</a> from Vietnam was designated as the Earth Hour Ambassador to implement several environmental protection activities.<sup id="cite_ref-80" class="reference"><a href="#cite_note-80"><span class="cite-bracket">[</span>80<span class="cite-bracket">]</span></a></sup> As ambassador, Phuong Khanh urged everyone to voluntarily turn off unnecessary lights and equipment for an hour, contributing to spreading the message "Save Energy, Save Earth – Energy saving, Earth protection".<sup id="cite_ref-81" class="reference"><a href="#cite_note-81"><span class="cite-bracket">[</span>81<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2020">2020</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=17" title="Edit section: 2020"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2020 took place on Saturday, March 28 from 8:30 pm to 9:30 pm local time and it went digitally due to the <a href="/wiki/COVID-19_pandemic" title="COVID-19 pandemic">COVID-19 pandemic</a>. 190 countries and territories came together to support this movement and few of the many public personalities such as UN Secretary General <a href="/wiki/Ant%C3%B3nio_Guterres" title="António Guterres">António Guterres</a>, <a href="/wiki/Pope_Francis" title="Pope Francis">Pope Francis</a>, environmental activist <a href="/wiki/Greta_Thunberg" title="Greta Thunberg">Greta Thunberg</a>, Canadian Prime Minister <a href="/wiki/Justin_Trudeau" title="Justin Trudeau">Justin Trudeau</a>, Indian film star <a href="/wiki/Amitabh_Bachchan" title="Amitabh Bachchan">Amitabh Bachchan</a>, UN Environment Goodwill ambassador <a href="/wiki/Dia_Mirza" title="Dia Mirza">Dia Mirza</a>, Kenyan singing sensation <a href="/wiki/Nikita_Kering" title="Nikita Kering">Nikita Kering</a>, Colombian model <a href="https://es.wikipedia.org/wiki/Claudia_Baham%C3%B3n" class="extiw" title="es:Claudia Bahamón">Claudia Bahamon</a> and British Singer Songwriter, <a href="/wiki/Cat_Stevens" title="Cat Stevens">Cat Stevens</a> also participated in Earth Hour 2020.<sup id="cite_ref-82" class="reference"><a href="#cite_note-82"><span class="cite-bracket">[</span>82<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2021">2021</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=18" title="Edit section: 2021"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2021 took place on Saturday, March 27 from 8:30 pm to 9:30 pm local time. </p> <div class="mw-heading mw-heading3"><h3 id="2022">2022</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=19" title="Edit section: 2022"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2022 took place on Saturday, March 26 from 8:30 pm to 9:30 pm local time. </p> <div class="mw-heading mw-heading3"><h3 id="2023">2023</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=20" title="Edit section: 2023"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2023 took place on Saturday, March 25 at 8:30 pm to 9:30 pm local time.<sup id="cite_ref-83" class="reference"><a href="#cite_note-83"><span class="cite-bracket">[</span>83<span class="cite-bracket">]</span></a></sup> Ahead of the event, Earth Hour was rebranded as the "Biggest Hour for Earth",<sup id="cite_ref-84" class="reference"><a href="#cite_note-84"><span class="cite-bracket">[</span>84<span class="cite-bracket">]</span></a></sup> which included a bigger focus on community action and less reliance on the 'switch off'. Over the course of the event Earth Hour measured over 410,000 hours of planet-positive activities pledged<sup id="cite_ref-85" class="reference"><a href="#cite_note-85"><span class="cite-bracket">[</span>85<span class="cite-bracket">]</span></a></sup> as part of the 'Hour Bank' which collated committed actions by the public.<sup id="cite_ref-86" class="reference"><a href="#cite_note-86"><span class="cite-bracket">[</span>86<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2024">2024</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=21" title="Edit section: 2024"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2024 took place on Saturday, March 23 from 8:30 pm to 9:30 pm local time in order to avoid coinciding with <a href="/wiki/Western_Christianity" title="Western Christianity">Western Christian</a> Holy Saturday which fell on March 30.<sup id="cite_ref-87" class="reference"><a href="#cite_note-87"><span class="cite-bracket">[</span>87<span class="cite-bracket">]</span></a></sup> </p><p>In its 16th anniversary of the Earth Hour Philippines, <a href="/wiki/Filipinos" title="Filipinos">Filipinos</a>, led by ambassador <a href="/wiki/SB19" title="SB19">SB19</a>'s <a href="/wiki/Pablo_(Filipino_musician)" title="Pablo (Filipino musician)">John Paulo Bagnas Nase</a> and <a href="/wiki/Toni_Yulo-Loyzaga" title="Toni Yulo-Loyzaga">Toni Yulo-Loyzaga</a>, turned off their lights for <a href="/wiki/Hour" title="Hour">60 minutes</a> on Saturday night, 8:30 PM – 9:30 PM <a href="/wiki/Philippine_Standard_Time" title="Philippine Standard Time">Philippine Standard Time</a>, March 23, 2024. The annual switch-off event was held at <a href="/wiki/Kartilya_ng_Katipunan" title="Kartilya ng Katipunan">Kartilya ng Katipunan</a> in <a href="/wiki/Bonifacio_Shrine" title="Bonifacio Shrine">Bonifacio Shrine</a> Manila, which was organized by <a href="/wiki/World_Wide_Fund_for_Nature" title="World Wide Fund for Nature">World Wide Fund for Nature</a> Philippines. "This year, Earth Hour Philippines' focus is on addressing plastic pollution," WWF-Philippines director Katherine Custodio said.<sup id="cite_ref-88" class="reference"><a href="#cite_note-88"><span class="cite-bracket">[</span>88<span class="cite-bracket">]</span></a></sup> Marcos Jr. underscored the role of "energy efficiency in addressing <a href="/wiki/Climate_change" title="Climate change">climate change</a> towards a greener future per the 'You Have The Power' campaign." <a href="/wiki/Okada_Manila" title="Okada Manila">Okada Manila</a> powered down its exterior lighting and iconic US$30 million "The Fountain", the largest <a href="/wiki/Musical_fountain" title="Musical fountain">musical fountain</a> in <a href="/wiki/Philippines" title="Philippines">Philippines</a> and dimmed the lights in its Coral and Pearl lobbies, wellness centers and other areas within the integrated resort. "We each have a role in fostering change and must act together," said President Byron Yip.<sup id="cite_ref-89" class="reference"><a href="#cite_note-89"><span class="cite-bracket">[</span>89<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-90" class="reference"><a href="#cite_note-90"><span class="cite-bracket">[</span>90<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Jollibee_Foods_Corporation" title="Jollibee Foods Corporation">Jollibee Foods Corporation</a> stores from the Philippines, China, North America, Europe, the Middle East, and Asia also gave an hour for the Earth, in solidarity with over 190 countries.<sup id="cite_ref-91" class="reference"><a href="#cite_note-91"><span class="cite-bracket">[</span>91<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="2025">2025</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=22" title="Edit section: 2025"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Earth Hour 2025 will take place on Saturday, March 22 from 8:30 pm to 9:30 pm local time in order to avoid taking place after <a href="/wiki/European_Summer_Time" class="mw-redirect" title="European Summer Time">European Summer Time</a> began.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2025)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="Measurement_of_reduction_in_electricity_use">Measurement of reduction in electricity use</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=23" title="Edit section: Measurement of reduction in electricity use"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Earth Hour Global FAQ page states: </p> <style data-mw-deduplicate="TemplateStyles:r1244412712">.mw-parser-output .templatequote{overflow:hidden;margin:1em 0;padding:0 32px}.mw-parser-output .templatequotecite{line-height:1.5em;text-align:left;margin-top:0}@media(min-width:500px){.mw-parser-output .templatequotecite{padding-left:1.6em}}</style><blockquote class="templatequote"><p>Earth Hour does not purport to be an energy/<a href="/wiki/Carbon_neutrality" class="mw-redirect" title="Carbon neutrality">carbon reduction</a> exercise, it is a symbolic action. Therefore, we do not engage in the measurement of energy/carbon reduction levels for the hour itself. Earth Hour is an initiative to encourage individuals, businesses and governments around the world to take accountability for their <a href="/wiki/Ecological_footprint" title="Ecological footprint">ecological footprint</a> and engage in dialogue and resource exchange that provides real solutions to our environmental challenges. Participation in Earth Hour symbolizes a commitment to change beyond the hour.<sup id="cite_ref-92" class="reference"><a href="#cite_note-92"><span class="cite-bracket">[</span>92<span class="cite-bracket">]</span></a></sup></p></blockquote> <p>A 2014 study published in <i>Energy Research and Social Science</i> compiled 274 measurements of observed changes in electricity demand caused by Earth Hour in 10 countries, spanning 6 years, and found that the events reduced electricity consumption an average of 4%.<sup id="cite_ref-93" class="reference"><a href="#cite_note-93"><span class="cite-bracket">[</span>93<span class="cite-bracket">]</span></a></sup> The study noted the policy challenge of converting Earth Hour's short-term energy saving into longer-term actions, including sustained changes in behaviour and investment. </p> <div class="mw-heading mw-heading2"><h2 id="Reception">Reception</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=24" title="Edit section: Reception"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Undue_weight plainlinks metadata ambox ambox-content ambox-undue-weight" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span class="skin-invert-image" typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Unbalanced_scales.svg/45px-Unbalanced_scales.svg.png" decoding="async" width="45" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Unbalanced_scales.svg/68px-Unbalanced_scales.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Unbalanced_scales.svg/90px-Unbalanced_scales.svg.png 2x" data-file-width="400" data-file-height="354" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article may <b>lend <a href="/wiki/Wikipedia:Neutral_point_of_view#Due_and_undue_weight" title="Wikipedia:Neutral point of view">undue weight</a> to certain ideas, incidents, or controversies</b>.<span class="hide-when-compact"> Please <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Earth_Hour&action=edit">help improve it</a> by rewriting it in a <b><a href="/wiki/Wikipedia:Neutral_point_of_view#Balance" title="Wikipedia:Neutral point of view">balanced fashion</a></b> that contextualizes different points of view.</span> <span class="date-container"><i>(<span class="date">March 2023</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>Criticisms of Earth Hour have included the following: </p> <ul><li>Some critics point out that the reduction in power consumption during Earth Hour itself is relatively insignificant.<sup id="cite_ref-rage_against_dimming_94-0" class="reference"><a href="#cite_note-rage_against_dimming-94"><span class="cite-bracket">[</span>94<span class="cite-bracket">]</span></a></sup> <i><a href="/wiki/The_Herald_Sun" class="mw-redirect" title="The Herald Sun">The Herald Sun</a></i> equated the power savings in the Sydney central business district to "taking 48,613 cars off the road for 1 hour".<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (October 2015)">citation needed</span></a></i>]</sup> Australian columnist <a href="/wiki/Andrew_Bolt" title="Andrew Bolt">Andrew Bolt</a> pointed out that "A cut so tiny is trivial – equal to taking six cars off the road for a year".<sup id="cite_ref-95" class="reference"><a href="#cite_note-95"><span class="cite-bracket">[</span>95<span class="cite-bracket">]</span></a></sup></li> <li>Other environmentalists have criticized Earth Hour's focus on individual behaviour, when a small number of fossil fuel companies have emitted the vast majority of man-made carbon emissions.<sup id="cite_ref-96" class="reference"><a href="#cite_note-96"><span class="cite-bracket">[</span>96<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Adam_McGibbon" title="Adam McGibbon">Adam McGibbon</a>, writing for <i><a href="/wiki/The_Independent" title="The Independent">The Independent</a></i>, criticized Earth Hour for releasing fossil fuel companies and politicians from their responsibility to deal with climate change.<sup id="cite_ref-97" class="reference"><a href="#cite_note-97"><span class="cite-bracket">[</span>97<span class="cite-bracket">]</span></a></sup></li> <li><i><a href="/wiki/The_Christian_Science_Monitor" title="The Christian Science Monitor">The Christian Science Monitor</a></i> said that most candles are made from <a href="/wiki/Paraffin_wax" title="Paraffin wax">paraffin</a>, a heavy <a href="/wiki/Hydrocarbon" title="Hydrocarbon">hydrocarbon</a> derived from <a href="/wiki/Crude_oil" class="mw-redirect" title="Crude oil">crude oil</a>, a <a href="/wiki/Fossil_fuel" title="Fossil fuel">fossil fuel</a>, and that depending on how many candles a person burns (if one uses candles during Earth Hour), whether or not they normally use <a href="/wiki/Compact_fluorescent_light" class="mw-redirect" title="Compact fluorescent light">compact fluorescent light</a> bulbs, and what source of energy is used to produce their electricity, in some cases, replacing light bulbs with candles will cause an increase, instead of a decrease, in carbon dioxide emissions.<sup id="cite_ref-98" class="reference"><a href="#cite_note-98"><span class="cite-bracket">[</span>98<span class="cite-bracket">]</span></a></sup></li> <li>On March 29, 2009, one day after Earth Hour 2009, <i>Dân Trí Daily News</i> published an editorial expressing concern that many young people chose to drive around the darkened city of <a href="/wiki/Hanoi" title="Hanoi">Hanoi</a> for fun, exhausting petroleum instead of electricity and resulting in long traffic jams.<sup id="cite_ref-99" class="reference"><a href="#cite_note-99"><span class="cite-bracket">[</span>99<span class="cite-bracket">]</span></a></sup></li> <li>George Marshall of the Climate Outreach Information Network criticized Earth Hour for "playing into the hands of (the critics of environmentalists)," as darkness is symbolic of fear and decay. "The overwhelming need at the moment is to inspire ordinary people with a vision of a better world, to make them feel that action on climate change is utterly desirable and positive.... the cultural resonance (of Earth Hour) couldn't be any worse."<sup id="cite_ref-100" class="reference"><a href="#cite_note-100"><span class="cite-bracket">[</span>100<span class="cite-bracket">]</span></a></sup></li> <li>The <a href="/wiki/Competitive_Enterprise_Institute" title="Competitive Enterprise Institute">Competitive Enterprise Institute</a> has introduced an opposing <i>Human Achievement Hour</i> in celebration of human progress in various fields of industry, including technology, medicine, energy, and more. During this hour, the Institute suggests that people celebrate by using modern technology such as electricity, telecommunications and indoor plumbing.<sup id="cite_ref-101" class="reference"><a href="#cite_note-101"><span class="cite-bracket">[</span>101<span class="cite-bracket">]</span></a></sup></li> <li>In 2009, economist <a href="/wiki/Ross_McKitrick" title="Ross McKitrick">Ross McKitrick</a> criticized the idea, saying, "Abundant, cheap electricity has been the greatest source of human liberation in the 20th century.[...] The whole mentality around Earth Hour demonizes electricity."<sup id="cite_ref-102" class="reference"><a href="#cite_note-102"><span class="cite-bracket">[</span>102<span class="cite-bracket">]</span></a></sup></li> <li>In March 2010, <i>The Daily Telegraph</i> quoted Ross Hayman, head of media relations at the <a href="/wiki/UK_National_Grid" class="mw-redirect" title="UK National Grid">UK National Grid</a>, as saying "it could therefore result in an increase in carbon emissions" due to complications related to rapidly lowering then raising electricity generation.<sup id="cite_ref-103" class="reference"><a href="#cite_note-103"><span class="cite-bracket">[</span>103<span class="cite-bracket">]</span></a></sup></li> <li>In February 2010, Rick Giles, president of <a href="/wiki/ACT_on_Campus" class="mw-redirect" title="ACT on Campus">ACT on Campus</a>, the youth wing of New Zealand's <a href="/wiki/ACT_Party" class="mw-redirect" title="ACT Party">ACT Party</a>, appeared on the <a href="/wiki/Morning_television" class="mw-redirect" title="Morning television">morning television</a> show <i><a href="/wiki/Sunrise_(New_Zealand_TV_program)" class="mw-redirect" title="Sunrise (New Zealand TV program)">Sunrise</a></i> to denounce Earth Hour and instead suggested the celebration of "Edison Hour". He argued that Earth Hour is an "anti-technology" cause, and that people will simply use candles instead, which is undesirable as they are petroleum-based. He argued that if we are heading for some kind of disaster, it makes sense to use technology to combat this.<sup id="cite_ref-104" class="reference"><a href="#cite_note-104"><span class="cite-bracket">[</span>104<span class="cite-bracket">]</span></a></sup> Rick said "I think my argument is so powerful that it's not necessary to talk about it".</li> <li>The <a href="/wiki/Ayn_Rand_Institute" title="Ayn Rand Institute">Ayn Rand Institute</a> wrote: "Participants spend an enjoyable sixty minutes in the dark, safe in the knowledge that the life-saving benefits of industrial civilization are just a light switch away... Forget one measly hour with just the lights off. How about Earth Month... Try spending a month shivering in the dark without heating, electricity, refrigeration; without power plants or generators; without any of the labor-saving, time-saving, and therefore life-saving products that industrial energy makes possible."<sup id="cite_ref-105" class="reference"><a href="#cite_note-105"><span class="cite-bracket">[</span>105<span class="cite-bracket">]</span></a></sup></li> <li>During the 2010 Earth Hour in the city of <a href="/wiki/Uusikaupunki" title="Uusikaupunki">Uusikaupunki</a> in Finland, a 17-year-old female motorcyclist hit a 71-year-old man, who was walking on the street instead of the sidewalk for an unknown reason. The man died from his injuries, while the motorcyclist and her passenger were uninjured. At the time of the accident, the street lights had been turned off as part of the Earth Hour. The police stated that the lack of street lighting may have played a part in the accident, while the mayor believed the city's street lights would have been too dim to prevent it even if they had been on.<sup id="cite_ref-106" class="reference"><a href="#cite_note-106"><span class="cite-bracket">[</span>106<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-107" class="reference"><a href="#cite_note-107"><span class="cite-bracket">[</span>107<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=25" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1266661725">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Aegopodium_podagraria1_ies.jpg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Aegopodium_podagraria1_ies.jpg/40px-Aegopodium_podagraria1_ies.jpg" decoding="async" width="32" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Aegopodium_podagraria1_ies.jpg/60px-Aegopodium_podagraria1_ies.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Aegopodium_podagraria1_ies.jpg/120px-Aegopodium_podagraria1_ies.jpg 2x" data-file-width="800" data-file-height="700" /></a></span></span><span class="portalbox-link"><a href="/wiki/Portal:Environment" title="Portal:Environment">Environment portal</a></span></li><li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Crystal_energy.svg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Crystal_energy.svg/29px-Crystal_energy.svg.png" decoding="async" width="29" 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Dark Sky Week">International Dark Sky Week</a></li> <li><a href="/wiki/Light_pollution" title="Light pollution">Light pollution</a></li> <li><a href="/wiki/Planet_Relief" title="Planet Relief">Planet Relief</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Earth_Hour&action=edit&section=26" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.earthhour.org/about-us">"About 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March 29, 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">March 25,</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Sustainababble+Podcast+%E2%80%93+Earth+Hour&rft.date=2015-03-29&rft_id=http%3A%2F%2Fsustainababble.fish%2F%3Fp%3D101&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-97"><span class="mw-cite-backlink"><b><a href="#cite_ref-97">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.independent.co.uk/voices/earth-hour-climate-change-environment-fossil-fuels-boycott-make-change-happen-really-care-a7643971.html">"If you really care about climate change, boycott Earth Hour"</a>. <i>The Independent</i>. March 22, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">March 25,</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Independent&rft.atitle=If+you+really+care+about+climate+change%2C+boycott+Earth+Hour&rft.date=2017-03-22&rft_id=https%3A%2F%2Fwww.independent.co.uk%2Fvoices%2Fearth-hour-climate-change-environment-fossil-fuels-boycott-make-change-happen-really-care-a7643971.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-98"><span class="mw-cite-backlink"><b><a href="#cite_ref-98">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://features.csmonitor.com/environment/2009/03/27/does-lighting-candles-for-earth-hour-defeat-the-purpose/">Does lighting candles for Earth Hour defeat the purpose?</a>, <i>Christian Science Monitor</i>, March 27, 2009</span> </li> <li id="cite_note-99"><span class="mw-cite-backlink"><b><a href="#cite_ref-99">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://dantri.com.vn/xa-hoi/cai-nhin-khac-trong-gio-trai-dat-316112.htm">"Cái nhìn khác trong Giờ Trái đất"</a>, <i>Dân Trí Daily News</i>, by Cường Cao, date: March 29, 2009. <span class="languageicon">(in Vietnamese)</span></span> </li> <li id="cite_note-100"><span class="mw-cite-backlink"><b><a href="#cite_ref-100">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMarshall2009" class="citation news cs1">Marshall, George (March 27, 2009). <a rel="nofollow" class="external text" href="https://www.theguardian.com/environment/cif-green/2009/mar/27/climate-change-carbon-emissions">"Earth Hour: Turning out the lights plays into the hands of our critics"</a>. <i>The Guardian</i>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0261-3077">0261-3077</a><span class="reference-accessdate">. Retrieved <span class="nowrap">March 25,</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Guardian&rft.atitle=Earth+Hour%3A+Turning+out+the+lights+plays+into+the+hands+of+our+critics&rft.date=2009-03-27&rft.issn=0261-3077&rft.aulast=Marshall&rft.aufirst=George&rft_id=https%3A%2F%2Fwww.theguardian.com%2Fenvironment%2Fcif-green%2F2009%2Fmar%2F27%2Fclimate-change-carbon-emissions&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-101"><span class="mw-cite-backlink"><b><a href="#cite_ref-101">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160120025719/https://cei.org/content/human-achievement-hour-2015">"Human Achievement Hour 2015"</a>. <i>cei.org</i>. Archived from <a rel="nofollow" class="external text" href="https://cei.org/content/human-achievement-hour-2015">the original</a> on January 20, 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">May 31,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=cei.org&rft.atitle=Human+Achievement+Hour+2015&rft_id=https%3A%2F%2Fcei.org%2Fcontent%2Fhuman-achievement-hour-2015&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-102"><span class="mw-cite-backlink"><b><a href="#cite_ref-102">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMcKitrick2009" class="citation web cs1"><a href="/wiki/Ross_McKitrick" title="Ross McKitrick">McKitrick, Ross</a> (2009). <a rel="nofollow" class="external text" href="http://www.rossmckitrick.com/uploads/4/8/0/8/4808045/earthhour.pdf">"Earth Hour: A Dissent"</a> <span class="cs1-format">(PDF)</span><span class="reference-accessdate">. Retrieved <span class="nowrap">March 31,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Earth+Hour%3A+A+Dissent&rft.date=2009&rft.aulast=McKitrick&rft.aufirst=Ross&rft_id=http%3A%2F%2Fwww.rossmckitrick.com%2Fuploads%2F4%2F8%2F0%2F8%2F4808045%2Fearthhour.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-103"><span class="mw-cite-backlink"><b><a href="#cite_ref-103">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.telegraph.co.uk/news/earth/environment/climatechange/7527469/Earth-Hour-will-not-cut-carbon-emissions.html">"Earth Hour 'will not cut carbon emissions'<span class="cs1-kern-right"></span>"</a>. <i>The Daily Telegraph</i>. London. March 27, 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Daily+Telegraph&rft.atitle=Earth+Hour+%27will+not+cut+carbon+emissions%27&rft.date=2010-03-27&rft_id=https%3A%2F%2Fwww.telegraph.co.uk%2Fnews%2Fearth%2Fenvironment%2Fclimatechange%2F7527469%2FEarth-Hour-will-not-cut-carbon-emissions.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-104"><span class="mw-cite-backlink"><b><a href="#cite_ref-104">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=2B9MqNzQuuk">"I think my argument is so powerful that it's not necessary to talk about it"</a>. YouTube. March 29, 2010. <a rel="nofollow" class="external text" href="https://ghostarchive.org/varchive/youtube/20211215/2B9MqNzQuuk">Archived</a> from the original on December 15, 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">March 31,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=I+think+my+argument+is+so+powerful+that+it%27s+not+necessary+to+talk+about+it&rft.pub=YouTube&rft.date=2010-03-29&rft_id=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D2B9MqNzQuuk&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-105"><span class="mw-cite-backlink"><b><a href="#cite_ref-105">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://ari.aynrand.org/issues/science-and-industrialization/environmental-issues/The-Real-Meaning-of-Earth-Hour">The Real Meaning of Earth Hour</a>, by Keith Lockitch, Ayn Rand Institute, March 23, 2009</span> </li> <li id="cite_note-106"><span class="mw-cite-backlink"><b><a href="#cite_ref-106">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20190329150314/https://hommaforum.org/index.php?topic=25901.5;imode">"Mies kuoli moottoripyörän alle pimeystempauksen pimentämällä tiellä"</a>. <i><a href="/wiki/Helsingin_Sanomat" title="Helsingin Sanomat">Helsingin Sanomat</a></i> (in Finnish). March 27, 2010. Archived from <a rel="nofollow" class="external text" href="http://hommaforum.org/index.php?topic=25901.5;imode">the original</a> on March 29, 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">March 28,</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Helsingin+Sanomat&rft.atitle=Mies+kuoli+moottoripy%C3%B6r%C3%A4n+alle+pimeystempauksen+piment%C3%A4m%C3%A4ll%C3%A4+tiell%C3%A4&rft.date=2010-03-27&rft_id=http%3A%2F%2Fhommaforum.org%2Findex.php%3Ftopic%3D25901.5%3Bimode&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span></span> </li> <li id="cite_note-107"><span class="mw-cite-backlink"><b><a href="#cite_ref-107">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="http://www.aamulehti.fi/uutiset/kotimaa/174590.shtml">"Kaupunki sammutti katuvalot Earth Hourin ajaksi – Mies jäi moottoripyörän alle pimeällä tiellä ja kuoli"</a>. <i><a href="/wiki/Aamulehti" title="Aamulehti">Aamulehti</a></i> (in Finnish). March 28, 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">March 28,</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Aamulehti&rft.atitle=Kaupunki+sammutti+katuvalot+Earth+Hourin+ajaksi+%E2%80%93+Mies+j%C3%A4i+moottoripy%C3%B6r%C3%A4n+alle+pime%C3%A4ll%C3%A4+tiell%C3%A4+ja+kuoli&rft.date=2010-03-28&rft_id=http%3A%2F%2Fwww.aamulehti.fi%2Fuutiset%2Fkotimaa%2F174590.shtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEarth+Hour" class="Z3988"></span><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged June 2016">dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a 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