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data-event-name="pinnable-header.vector-toc.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">dölj</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inledning</div> </a> </li> <li id="toc-Historia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Historia"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Historia</span> </div> </a> <button aria-controls="toc-Historia-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Växla underavsnittet Historia</span> </button> <ul id="toc-Historia-sublist" class="vector-toc-list"> <li id="toc-Nollmeridian_för_olika_länder_före_1884" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nollmeridian_för_olika_länder_före_1884"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Nollmeridian för olika länder före 1884</span> </div> </a> <ul id="toc-Nollmeridian_för_olika_länder_före_1884-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Exakta_Greenwichmeridianen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Exakta_Greenwichmeridianen"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Exakta Greenwichmeridianen</span> </div> </a> <ul id="toc-Exakta_Greenwichmeridianen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Se_även" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Se_även"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Se även</span> </div> </a> <ul id="toc-Se_även-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referenser" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referenser"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Referenser</span> </div> </a> <button aria-controls="toc-Referenser-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Växla underavsnittet Referenser</span> </button> <ul id="toc-Referenser-sublist" class="vector-toc-list"> <li id="toc-Noter" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Noter"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Noter</span> </div> </a> <ul id="toc-Noter-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Externa_länkar" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Externa_länkar"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Externa länkar</span> </div> </a> <ul id="toc-Externa_länkar-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="Innehåll" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Innehållsförteckning" > <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="Växla innehållsförteckningen" > <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">Växla innehållsförteckningen</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">Nollmeridian</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="Gå till en artikel på ett annat språk. Tillgänglig på 61 språk" > <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-61" 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">61 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Greenwich-meridiaan" title="Greenwich-meridiaan – afrikaans" lang="af" hreflang="af" data-title="Greenwich-meridiaan" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AE%D8%B7_%D8%A7%D9%84%D8%B7%D9%88%D9%84_%D8%A7%D9%84%D8%A3%D9%88%D9%84_(%D8%BA%D8%B1%D9%8A%D9%86%D8%AA%D8%B4)" title="خط الطول الأول (غرينتش) – arabiska" lang="ar" hreflang="ar" data-title="خط الطول الأول (غرينتش)" data-language-autonym="العربية" data-language-local-name="arabiska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Meridianu_de_Greenwich" title="Meridianu de Greenwich – asturiska" lang="ast" hreflang="ast" data-title="Meridianu de Greenwich" data-language-autonym="Asturianu" data-language-local-name="asturiska" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Qrinvi%C3%A7_meridian%C4%B1" title="Qrinviç meridianı – azerbajdzjanska" lang="az" hreflang="az" data-title="Qrinviç meridianı" data-language-autonym="Azərbaycanca" data-language-local-name="azerbajdzjanska" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%93%D1%80%D1%8B%D0%BD%D0%B2%D1%96%D1%86%D0%BA%D1%96_%D0%BC%D0%B5%D1%80%D1%8B%D0%B4%D1%8B%D1%8F%D0%BD" title="Грынвіцкі мерыдыян – belarusiska" lang="be" hreflang="be" data-title="Грынвіцкі мерыдыян" data-language-autonym="Беларуская" data-language-local-name="belarusiska" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%93%D1%80%D1%8B%D0%BD%D0%B2%D1%96%D1%86%D0%BA%D1%96_%D0%BC%D1%8D%D1%80%D1%8B%D0%B4%D1%8B%D1%8F%D0%BD" title="Грынвіцкі мэрыдыян – belarusiska (tarasjkevitsa)" lang="be-tarask" hreflang="be-tarask" data-title="Грынвіцкі мэрыдыян" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="belarusiska (tarasjkevitsa)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9D%D0%B0%D1%87%D0%B0%D0%BB%D0%B5%D0%BD_%D0%BC%D0%B5%D1%80%D0%B8%D0%B4%D0%B8%D0%B0%D0%BD" title="Начален меридиан – bulgariska" lang="bg" hreflang="bg" data-title="Начален меридиан" data-language-autonym="Български" data-language-local-name="bulgariska" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Grini%C4%8Dki_meridijan" title="Grinički meridijan – bosniska" lang="bs" hreflang="bs" data-title="Grinički meridijan" data-language-autonym="Bosanski" data-language-local-name="bosniska" 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/Meridi%C3%A0_de_Greenwich" title="Meridià de Greenwich – katalanska" lang="ca" hreflang="ca" data-title="Meridià de Greenwich" data-language-autonym="Català" data-language-local-name="katalanska" 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/Z%C3%A1kladn%C3%AD_poledn%C3%ADk" title="Základní poledník – tjeckiska" lang="cs" hreflang="cs" data-title="Základní poledník" data-language-autonym="Čeština" data-language-local-name="tjeckiska" 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/Nulmeridianen" title="Nulmeridianen – danska" lang="da" hreflang="da" data-title="Nulmeridianen" data-language-autonym="Dansk" data-language-local-name="danska" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-dsb mw-list-item"><a href="https://dsb.wikipedia.org/wiki/Nulowy_meridian" title="Nulowy meridian – lågsorbiska" lang="dsb" hreflang="dsb" data-title="Nulowy meridian" data-language-autonym="Dolnoserbski" data-language-local-name="lågsorbiska" class="interlanguage-link-target"><span>Dolnoserbski</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Algmeridiaan" title="Algmeridiaan – estniska" lang="et" hreflang="et" data-title="Algmeridiaan" data-language-autonym="Eesti" data-language-local-name="estniska" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Prime_meridian_(Greenwich)" title="Prime meridian (Greenwich) – engelska" lang="en" hreflang="en" data-title="Prime meridian (Greenwich)" data-language-autonym="English" data-language-local-name="engelska" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Meridiano_de_Greenwich" title="Meridiano de Greenwich – spanska" lang="es" hreflang="es" data-title="Meridiano de Greenwich" data-language-autonym="Español" data-language-local-name="spanska" 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/Grenvi%C4%89a_Meridiano" title="Grenviĉa Meridiano – esperanto" lang="eo" hreflang="eo" data-title="Grenviĉa Meridiano" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Greenwich_meridianoa" title="Greenwich meridianoa – baskiska" lang="eu" hreflang="eu" data-title="Greenwich meridianoa" data-language-autonym="Euskara" data-language-local-name="baskiska" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D8%B5%D9%81%E2%80%8C%D8%A7%D9%84%D9%86%D9%87%D8%A7%D8%B1_%D9%85%D8%A8%D8%AF%D8%A3_(%DA%AF%D8%B1%DB%8C%D9%86%D9%88%DB%8C%DA%86)" title="نصف‌النهار مبدأ (گرینویچ) – persiska" lang="fa" hreflang="fa" data-title="نصف‌النهار مبدأ (گرینویچ)" data-language-autonym="فارسی" data-language-local-name="persiska" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Greenwichmeridianin" title="Greenwichmeridianin – färöiska" lang="fo" hreflang="fo" data-title="Greenwichmeridianin" data-language-autonym="Føroyskt" data-language-local-name="färöiska" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/M%C3%A9ridien_de_Greenwich" title="Méridien de Greenwich – franska" lang="fr" hreflang="fr" data-title="Méridien de Greenwich" data-language-autonym="Français" data-language-local-name="franska" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Nulmeridiaan" title="Nulmeridiaan – västfrisiska" lang="fy" hreflang="fy" data-title="Nulmeridiaan" data-language-autonym="Frysk" data-language-local-name="västfrisiska" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Meridiano_de_Greenwich" title="Meridiano de Greenwich – galiciska" lang="gl" hreflang="gl" data-title="Meridiano de Greenwich" data-language-autonym="Galego" data-language-local-name="galiciska" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B7%B8%EB%A6%AC%EB%8B%88%EC%B9%98_%EC%9E%90%EC%98%A4%EC%84%A0" title="그리니치 자오선 – koreanska" lang="ko" hreflang="ko" data-title="그리니치 자오선" data-language-autonym="한국어" data-language-local-name="koreanska" 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%B6%D6%80%D5%B8%D5%B5%D5%A1%D5%AF%D5%A1%D5%B6_%D5%B4%D5%AB%D5%BB%D6%85%D6%80%D5%A5%D5%A1%D5%AF%D5%A1%D5%B6" title="Զրոյական միջօրեական – armeniska" lang="hy" hreflang="hy" data-title="Զրոյական միջօրեական" data-language-autonym="Հայերեն" data-language-local-name="armeniska" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hsb mw-list-item"><a href="https://hsb.wikipedia.org/wiki/Nulowy_meridian" title="Nulowy meridian – högsorbiska" lang="hsb" hreflang="hsb" data-title="Nulowy meridian" data-language-autonym="Hornjoserbsce" data-language-local-name="högsorbiska" class="interlanguage-link-target"><span>Hornjoserbsce</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Grini%C4%8Dki_meridijan" title="Grinički meridijan – kroatiska" lang="hr" hreflang="hr" data-title="Grinički meridijan" data-language-autonym="Hrvatski" data-language-local-name="kroatiska" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/N%C3%BAllbaugur" title="Núllbaugur – isländska" lang="is" hreflang="is" data-title="Núllbaugur" data-language-autonym="Íslenska" data-language-local-name="isländska" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Meridiano_di_Greenwich" title="Meridiano di Greenwich – italienska" lang="it" hreflang="it" data-title="Meridiano di Greenwich" data-language-autonym="Italiano" data-language-local-name="italienska" 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%A7%D7%95_%D7%92%D7%A8%D7%99%D7%A0%D7%99%D7%A5%27" title="קו גריניץ' – hebreiska" lang="he" hreflang="he" data-title="קו גריניץ'" data-language-autonym="עברית" data-language-local-name="hebreiska" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Meridian_Utama" title="Meridian Utama – javanesiska" lang="jv" hreflang="jv" data-title="Meridian Utama" data-language-autonym="Jawa" data-language-local-name="javanesiska" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%92%E1%83%A0%E1%83%98%E1%83%9C%E1%83%95%E1%83%98%E1%83%A9%E1%83%98%E1%83%A1_%E1%83%9B%E1%83%94%E1%83%A0%E1%83%98%E1%83%93%E1%83%98%E1%83%90%E1%83%9C%E1%83%98" title="გრინვიჩის მერიდიანი – georgiska" lang="ka" hreflang="ka" data-title="გრინვიჩის მერიდიანი" data-language-autonym="ქართული" data-language-local-name="georgiska" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Premye_meridyen" title="Premye meridyen – haitiska" lang="ht" hreflang="ht" data-title="Premye meridyen" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haitiska" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Grini%C4%8Das_meridi%C4%81ns" title="Griničas meridiāns – lettiska" lang="lv" hreflang="lv" data-title="Griničas meridiāns" data-language-autonym="Latviešu" data-language-local-name="lettiska" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Nullmeridian" title="Nullmeridian – luxemburgiska" lang="lb" hreflang="lb" data-title="Nullmeridian" data-language-autonym="Lëtzebuergesch" data-language-local-name="luxemburgiska" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Greenwichi_d%C3%A9lk%C3%B6r" title="Greenwichi délkör – ungerska" lang="hu" hreflang="hu" data-title="Greenwichi délkör" data-language-autonym="Magyar" data-language-local-name="ungerska" 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%9D%D1%83%D0%BB%D1%82%D0%B8_%D0%BC%D0%B5%D1%80%D0%B8%D0%B4%D0%B8%D1%98%D0%B0%D0%BD" title="Нулти меридијан – makedonska" lang="mk" hreflang="mk" data-title="Нулти меридијан" data-language-autonym="Македонски" data-language-local-name="makedonska" 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%97%E0%B5%8D%E0%B4%B0%E0%B5%80%E0%B5%BB%E0%B4%B5%E0%B4%BF%E0%B4%9A%E0%B5%8D%E0%B4%9A%E0%B5%8D_%E0%B4%B0%E0%B5%87%E0%B4%96" title="ഗ്രീൻവിച്ച് രേഖ – malayalam" lang="ml" hreflang="ml" data-title="ഗ്രീൻവിച്ച് രേഖ" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%92%E1%83%A0%E1%83%98%E1%83%9C%E1%83%95%E1%83%98%E1%83%A9%E1%83%98%E1%83%A8_%E1%83%9B%E1%83%94%E1%83%A0%E1%83%98%E1%83%93%E1%83%98%E1%83%90%E1%83%9C%E1%83%98" title="გრინვიჩიშ მერიდიანი – mingrelianska" lang="xmf" hreflang="xmf" data-title="გრინვიჩიშ მერიდიანი" data-language-autonym="მარგალური" data-language-local-name="mingrelianska" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Meridian_perdana_(Greenwich)" title="Meridian perdana (Greenwich) – malajiska" lang="ms" hreflang="ms" data-title="Meridian perdana (Greenwich)" data-language-autonym="Bahasa Melayu" data-language-local-name="malajiska" 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/Meridiaan_van_Greenwich" title="Meridiaan van Greenwich – nederländska" lang="nl" hreflang="nl" data-title="Meridiaan van Greenwich" data-language-autonym="Nederlands" data-language-local-name="nederländska" 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%B0%E3%83%AA%E3%83%8B%E3%83%83%E3%82%B8%E5%AD%90%E5%8D%88%E7%B7%9A" title="グリニッジ子午線 – japanska" lang="ja" hreflang="ja" data-title="グリニッジ子午線" data-language-autonym="日本語" data-language-local-name="japanska" 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/Nullmeridianen" title="Nullmeridianen – norskt bokmål" lang="nb" hreflang="nb" data-title="Nullmeridianen" data-language-autonym="Norsk bokmål" data-language-local-name="norskt 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/Nullmeridianen" title="Nullmeridianen – nynorska" lang="nn" hreflang="nn" data-title="Nullmeridianen" data-language-autonym="Norsk nynorsk" data-language-local-name="nynorska" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Grinvich_meridiani" title="Grinvich meridiani – uzbekiska" lang="uz" hreflang="uz" data-title="Grinvich meridiani" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbekiska" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Meridian_%C3%ABd_Greenwich" title="Meridian ëd Greenwich – piemontesiska" lang="pms" hreflang="pms" data-title="Meridian ëd Greenwich" data-language-autonym="Piemontèis" data-language-local-name="piemontesiska" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Meridiano_de_Greenwich" title="Meridiano de Greenwich – portugisiska" lang="pt" hreflang="pt" data-title="Meridiano de Greenwich" data-language-autonym="Português" data-language-local-name="portugisiska" 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/Meridianul_Zero" title="Meridianul Zero – rumänska" lang="ro" hreflang="ro" data-title="Meridianul Zero" data-language-autonym="Română" data-language-local-name="rumänska" 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%93%D1%80%D0%B8%D0%BD%D0%B2%D0%B8%D1%87%D1%81%D0%BA%D0%B8%D0%B9_%D0%BC%D0%B5%D1%80%D0%B8%D0%B4%D0%B8%D0%B0%D0%BD" title="Гринвичский меридиан – ryska" lang="ru" hreflang="ru" data-title="Гринвичский меридиан" data-language-autonym="Русский" data-language-local-name="ryska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Meridiani_i_Grini%C3%A7it" title="Meridiani i Griniçit – albanska" lang="sq" hreflang="sq" data-title="Meridiani i Griniçit" data-language-autonym="Shqip" data-language-local-name="albanska" 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/Prime_Meridian" title="Prime Meridian – Simple English" lang="en-simple" hreflang="en-simple" data-title="Prime Meridian" 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-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Greenwichsk%C3%BD_poludn%C3%ADk" title="Greenwichský poludník – slovakiska" lang="sk" hreflang="sk" data-title="Greenwichský poludník" data-language-autonym="Slovenčina" data-language-local-name="slovakiska" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Greenwi%C5%A1ki_poldnevnik" title="Greenwiški poldnevnik – slovenska" lang="sl" hreflang="sl" data-title="Greenwiški poldnevnik" data-language-autonym="Slovenščina" data-language-local-name="slovenska" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr badge-Q70893996 mw-list-item" title=""><a href="https://sr.wikipedia.org/wiki/%D0%93%D1%80%D0%B8%D0%BD%D0%B8%D1%87%D0%BA%D0%B8_%D0%BC%D0%B5%D1%80%D0%B8%D0%B4%D0%B8%D1%98%D0%B0%D0%BD" title="Гринички меридијан – serbiska" lang="sr" hreflang="sr" data-title="Гринички меридијан" data-language-autonym="Српски / srpski" data-language-local-name="serbiska" 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/Grini%C4%8Dki_meridijan" title="Grinički meridijan – serbokroatiska" lang="sh" hreflang="sh" data-title="Grinički meridijan" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroatiska" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Ba%C5%9Flang%C4%B1%C3%A7_meridyeni" title="Başlangıç meridyeni – turkiska" lang="tr" hreflang="tr" data-title="Başlangıç meridyeni" data-language-autonym="Türkçe" data-language-local-name="turkiska" 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%D1%80%D0%B8%D0%BD%D0%B2%D1%96%D1%86%D1%8C%D0%BA%D0%B8%D0%B9_%D0%BC%D0%B5%D1%80%D0%B8%D0%B4%D1%96%D0%B0%D0%BD" title="Гринвіцький меридіан – ukrainska" lang="uk" hreflang="uk" data-title="Гринвіцький меридіан" data-language-autonym="Українська" data-language-local-name="ukrainska" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Kinh_tuy%E1%BA%BFn_g%E1%BB%91c_(Greenwich)" title="Kinh tuyến gốc (Greenwich) – vietnamesiska" lang="vi" hreflang="vi" data-title="Kinh tuyến gốc (Greenwich)" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamesiska" 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/Meridyano_han_Greenwich" title="Meridyano han Greenwich – waray" lang="war" hreflang="war" data-title="Meridyano han Greenwich" 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/%E6%A0%BC%E6%9E%97%E5%B0%BC%E6%B2%BB%E5%AD%90%E5%8D%88%E7%BA%BF" title="格林尼治子午线 – wu" lang="wuu" hreflang="wuu" data-title="格林尼治子午线" 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/%E6%A0%BC%E6%9E%97%E5%B0%BC%E6%B2%BB%E5%AD%90%E5%8D%88%E7%B7%9A" title="格林尼治子午線 – kantonesiska" lang="yue" hreflang="yue" data-title="格林尼治子午線" data-language-autonym="粵語" data-language-local-name="kantonesiska" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a 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src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Primemeridian.jpg/250px-Primemeridian.jpg" decoding="async" width="250" height="130" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Primemeridian.jpg/375px-Primemeridian.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Primemeridian.jpg/500px-Primemeridian.jpg 2x" data-file-width="1600" data-file-height="835" /></a><figcaption><div class="center" style="width:auto; margin-left:auto; margin-right:auto;">Nollmeridianen</div></figcaption></figure> <p><b>Nollmeridian</b> är den <a href="/wiki/Longitud" title="Longitud">longitud</a> (längdgrad) som är 0° och utgör referens för position i öst-västlig riktning. </p><p>Enligt en internationell konvention från 1884 passar nollmeridianen genom <a href="/wiki/Greenwich" title="Greenwich">Greenwich</a> i sydöstra <a href="/wiki/London" title="London">London</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-reference-link-bracket">[</span>1<span class="cite-reference-link-bracket">]</span></a></sup>. Problem uppstod när man började använda satelliter, då satellitbanor inte följer Jordens form utan Jordens massa. Satellitnavigeringsystem använder en stillastående nollmeridian medan Greenwichmeridianen rör sig pga kontinentaldriften<sup id="cite_ref-Altamimi_Sillard_Boucher_2002_pp._ETG_2–1–ETG_2–19_2-0" class="reference"><a href="#cite_note-Altamimi_Sillard_Boucher_2002_pp._ETG_2–1–ETG_2–19-2"><span class="cite-reference-link-bracket">[</span>2<span class="cite-reference-link-bracket">]</span></a></sup>. </p><p>Greenwichmeridianen går söderut från <a href="/wiki/Nordpolen" title="Nordpolen">Nordpolen</a> och når första gången land vid 53°45′34″N, sydöst om Sand-le-Mere husvagnspark öster om <a href="/wiki/Kingston_upon_Hull" title="Kingston upon Hull">Kingston upon Hull</a> i <a href="/wiki/England" title="England">England</a>. Den passerar sedan <a href="/wiki/Frankrike" title="Frankrike">Frankrike</a>, <a href="/wiki/Spanien" title="Spanien">Spanien</a>, <a href="/wiki/Algeriet" title="Algeriet">Algeriet</a>, <a href="/wiki/Mali" title="Mali">Mali</a>, <a href="/wiki/Burkina_Faso" title="Burkina Faso">Burkina Faso</a>, <a href="/wiki/Togo" title="Togo">Togo</a> och <a href="/wiki/Ghana" title="Ghana">Ghana</a> och sedan genom <a href="/wiki/Drottning_Mauds_land" class="mw-redirect" title="Drottning Mauds land">Drottning Mauds land</a> till <a href="/wiki/Sydpolen" title="Sydpolen">Sydpolen</a>. </p><p>Ordet "nollmeridian" är belagt i svenska språket sedan 1900.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-reference-link-bracket">[</span>3<span class="cite-reference-link-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Historia">Historia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=1" title="Redigera avsnitt: Historia" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=1" title="Redigera avsnitts källkod: Historia"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fil:Prime_meridian.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/Prime_meridian.jpg/250px-Prime_meridian.jpg" decoding="async" width="250" height="333" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/Prime_meridian.jpg/375px-Prime_meridian.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/d/d5/Prime_meridian.jpg 2x" data-file-width="450" data-file-height="600" /></a><figcaption>Nollmeridianen i <a href="/wiki/Greenwich" title="Greenwich">Greenwich</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fil:Stockholms_gamla_observatorium_1858.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/91/Stockholms_gamla_observatorium_1858.jpg/250px-Stockholms_gamla_observatorium_1858.jpg" decoding="async" width="250" height="166" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/9/91/Stockholms_gamla_observatorium_1858.jpg 1.5x" data-file-width="255" data-file-height="169" /></a><figcaption><a href="/wiki/Stockholms_gamla_observatorium" title="Stockholms gamla observatorium">Stockholms gamla observatorium</a> år 1858, innan kupolen byggdes.</figcaption></figure> <p>Greenwichmeridianen vid <a href="/wiki/Observatoriet_i_Greenwich" title="Observatoriet i Greenwich">Observatoriet i Greenwich</a> etablerades av Sir <a href="/wiki/George_Biddell_Airy" title="George Biddell Airy">George Biddell Airy</a> år 1851. 1884 använde över två tredjedelar av världens fartyg och tonnage den som referensmeridian på sina kartor. I oktober samma år samlade USA:s president <a href="/wiki/Chester_A._Arthur" title="Chester A. Arthur">Chester A. Arthur</a> 41 delegater från 25 länder i <a href="/wiki/Washington,_D.C." title="Washington, D.C.">Washington, D.C.</a> för <i>the International Meridian Conference</i>. Konferensen valde Greenwichmeridianen som nollmeridian tack vare dess popularitet. Fransmännen avstod dock från att rösta och franska kartor fortsatte att använda Parismeridianen i flera årtionden. </p><p>Innan dess hade nästan varje land sin egen nollmeridian. I samband med upprättande av <a href="/wiki/Generalstabskartan" title="Generalstabskartan">generalstabskartan</a> för Sverige 1805 bestämdes exempelvis att nollmeridianen skulle gå genom <a href="/wiki/Stockholms_gamla_observatorium" title="Stockholms gamla observatorium">Stockholms gamla observatorium</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Nollmeridian_för_olika_länder_före_1884"><span id="Nollmeridian_f.C3.B6r_olika_l.C3.A4nder_f.C3.B6re_1884"></span>Nollmeridian för olika länder före 1884</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=2" title="Redigera avsnitt: Nollmeridian för olika länder före 1884" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=2" title="Redigera avsnitts källkod: Nollmeridian för olika länder före 1884"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Ferromeridianen" class="mw-redirect" title="Ferromeridianen">Ferromeridianen</a> (<a href="/wiki/El_Hierro" title="El Hierro">El Hierro</a>), bred användning i Europa sedan antiken (senare bestämd till 17° 39′ 46″ V för att vara exakt 20° väster om <a href="/wiki/Paris" title="Paris">Paris</a>, efter franskt förslag i <a href="/wiki/Washington,_D.C." title="Washington, D.C.">Washington</a> <a href="/wiki/1884" title="1884">1884</a>)</li> <li><a href="/wiki/Bern" title="Bern">Bern</a> 7° 26′ 22.5″ Ö</li> <li><a href="/wiki/Bryssel" title="Bryssel">Bryssel</a> 4° 22′ 4.71″ Ö</li> <li><a href="/wiki/Rundet%C3%A5rn" title="Rundetårn">Rundetårn</a>, <a href="/wiki/K%C3%B6penhamn" title="Köpenhamn">Köpenhamn</a> 12° 34′ 32.25″ Ö</li> <li><a href="/wiki/Cheopspyramiden" title="Cheopspyramiden">Cheopspyramiden</a></li> <li><a href="/wiki/Klaudios_Ptolemaios" title="Klaudios Ptolemaios">Klaudios Ptolemaios</a> <a href="/wiki/Almagest" title="Almagest">almagest</a>, <a href="/wiki/Alexandria" title="Alexandria">Alexandria</a></li> <li><a href="/wiki/Den_heliga_gravens_kyrka" class="mw-redirect" title="Den heliga gravens kyrka">Den heliga gravens kyrka</a>, <a href="/wiki/Jerusalem" title="Jerusalem">Jerusalem</a> 35° 13′ 46″ Ö</li> <li><a href="/wiki/Lissabon" title="Lissabon">Lissabon</a> 9° 07′ 54.862″ V</li> <li><a href="/wiki/Madrid" title="Madrid">Madrid</a> 3° 41′ 16.58″ V</li> <li><a href="/wiki/Mekka" class="mw-redirect" title="Mekka">Mekka</a> 39° 49′ Ö</li> <li><a href="/wiki/Oradea" title="Oradea">Oradea</a> 21° 55′ 16″ Ö</li> <li><a href="/wiki/Oslo" title="Oslo">Oslo</a> 10° 43′ 22.5″ Ö</li> <li><a href="/wiki/Paris" title="Paris">Paris</a> 2° 20′ 14.025″ Ö</li> <li><a href="/wiki/Philadelphia" title="Philadelphia">Philadelphia</a></li> <li><a href="/wiki/Pisa" title="Pisa">Pisa</a> 10° 24′ Ö</li> <li><a href="/wiki/Monte_Mario" class="mw-disambig" title="Monte Mario">Monte Mario</a>, <a href="/wiki/Rom" title="Rom">Rom</a> 12° 27′ 08.4″ Ö</li> <li><a href="/wiki/Sankt_Petersburg" title="Sankt Petersburg">Sankt Petersburg</a> 30° 19′ 42.09″ Ö</li> <li><a href="/wiki/Stockholms_gamla_observatorium" title="Stockholms gamla observatorium">Stockholms gamla observatorium</a> 18° 3′ 29.8″ Ö (för positioner på land; <a href="/wiki/Ferromeridianen" class="mw-redirect" title="Ferromeridianen">Ferromeridianen</a>, som gick genom Kanarieön Hierros västligaste punkt vid longitud 18° 36′ 31″ V, användes för positioner på sjökort)</li> <li><a href="/wiki/Ujjain" title="Ujjain">Ujjain</a> 75° 47′ Ö, användes i indisk astronomi och indiska kalendrar</li> <li><a href="/wiki/Warszawa" title="Warszawa">Warszawa</a> 21° 00’ 42” Ö</li> <li><a href="/wiki/Washington,_D.C." title="Washington, D.C.">Washington, D.C.</a> 77° 3′ 2.3″ V</li></ul> <div class="mw-heading mw-heading2"><h2 id="Exakta_Greenwichmeridianen">Exakta Greenwichmeridianen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=3" title="Redigera avsnitt: Exakta Greenwichmeridianen" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=3" title="Redigera avsnitts källkod: Exakta Greenwichmeridianen"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/World_Geodetic_System_1984" title="World Geodetic System 1984">World Geodetic System 1984</a> (WGS84), som används av satelliter, skiljer sig något från traditionella longituder. WGS84:s nollmeridian ligger 102,5 meter öster om markeringen i Greenwich.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-reference-link-bracket">[</span>4<span class="cite-reference-link-bracket">]</span></a></sup> Avvikelsen på andra platser kan vara så mycket som 30" öst eller väst. Märkligt nog, medvetet eller av misstag, markeras WGS84:s nollmeridian i Greenwich av en papperskorg på stigen i rakt östligt riktning från observatoriet. </p><p>Nollmeridianen som används av det brittiska <a href="/w/index.php?title=Ordnance_Survey&action=edit&redlink=1" class="new" title="Ordnance Survey [inte skriven än]">Ordnance Survey</a><sup>(<a href="https://en.wikipedia.org/wiki/Ordnance_Survey" class="extiw" title="en:Ordnance Survey"><span title=""Ordnance Survey" i engelska Wikipedia">en</span></a>)</sup> ligger cirka sex meter väster om markeringen i Greenwich och var standardmeridianen före <a href="/wiki/1851" title="1851">1851</a>, Ordnance Survey har helt enkelt fortsatt att använda den. </p><p><a href="/wiki/Koordinerad_universell_tid" title="Koordinerad universell tid">Koordinerad universell tid</a> (UTC) baseras på WGS84:s meridian. Standardtiden UTC kan avvika från tiden vid meridianen med upp till en sekund (motsvarande cirka 280 meter vid Greenwich) på grund av att jordens rotation är någon tusendels sekund långsammare än 24 timmar. Därför läggs <a href="/wiki/Skottsekund" title="Skottsekund">skottsekunder</a> in då och då för att synkronisera UTC med Jorden. </p><p>Greenwichmeridianen markeras numera av en laserstråle som skickas ut från observatoriet. </p> <div class="mw-heading mw-heading2"><h2 id="Se_även"><span id="Se_.C3.A4ven"></span>Se även</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=4" title="Redigera avsnitt: Se även" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=4" title="Redigera avsnitts källkod: Se även"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Geografiska_koordinater" class="mw-redirect" title="Geografiska koordinater">Geografiska koordinater</a></li> <li><a href="/wiki/GPS" class="mw-redirect" title="GPS">GPS</a></li> <li><a href="/wiki/Gradn%C3%A4t" title="Gradnät">Gradnät</a></li> <li><a href="/wiki/Koordinatsystem" title="Koordinatsystem">Koordinatsystem</a></li> <li><a href="/wiki/Meridian" title="Meridian">Meridian</a></li> <li><a href="/wiki/Navigering" class="mw-redirect" title="Navigering">Navigering</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Referenser">Referenser</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=5" title="Redigera avsnitt: Referenser" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=5" title="Redigera avsnitts källkod: Referenser"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <dl><dd><span class="plainlinks"><i>Den här artikeln är helt eller delvis baserad på material från <a class="external text" href="https://en.wikipedia.org/wiki/Main_Page">engelskspråkiga Wikipedia</a>, <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Prime_Meridian&oldid=220325392">tidigare version</a>.</i></span></dd></dl> <div class="mw-heading mw-heading3"><h3 id="Noter">Noter</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=6" title="Redigera avsnitt: Noter" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=6" title="Redigera avsnitts källkod: Noter"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <span class="reference-text"><cite style="font-style:normal" class="web"><a rel="nofollow" class="external text" href="https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/nollmeridian">”nollmeridian - Uppslagsverk - NE.se”</a>. <i><span>www.ne.se</span></i><span class="printonly">. <a rel="nofollow" class="external free" href="https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/nollmeridian">https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/nollmeridian</a></span><span class="reference-accessdate">. Läst 27 mars 2020</span>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=nollmeridian+-+Uppslagsverk+-+NE.se&rft.atitle=www.ne.se&rft_id=https%3A%2F%2Fwww.ne.se%2Fuppslagsverk%2Fencyklopedi%2Fl%25C3%25A5ng%2Fnollmeridian&rfr_id=info:sid/en.wikipedia.org:Nollmeridian"><span style="display: none;"> </span></span><sup class="noprint Inline-Template"> [<a href="/wiki/Wikipedia:K%C3%A4llh%C3%A4nvisningar#Källor_som_kräver_inloggning" title="Wikipedia:Källhänvisningar">inloggning kan krävas</a>]</sup></span> </li> <li id="cite_note-Altamimi_Sillard_Boucher_2002_pp._ETG_2–1–ETG_2–19-2"><a href="#cite_ref-Altamimi_Sillard_Boucher_2002_pp._ETG_2–1–ETG_2–19_2-0">^</a> <span class="reference-text"><cite style="font-style:normal" class="journal" id="CITEREFAltamimiSillardBoucher2002">Altamimi, Zuheir; Sillard, Patrick; Boucher, Claude (2002). ”ITRF2000: A new release of the International Terrestrial Reference Frame for earth science applications”. <i>Journal of Geophysical Research: Solid Earth</i> (American Geophysical Union (AGU)) 107 (B10): sid. ETG 2–1–ETG 2–19. <a href="/wiki/Digital_object_identifier" title="Digital object identifier">doi</a>:<span class="neverexpand"><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1029%2F2001jb000561">10.1029/2001jb000561</a></span>. <a href="/wiki/International_Standard_Serial_Number" title="International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="http://worldcat.org/issn/0148-0227">0148-0227</a>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=ITRF2000%3A+A+new+release+of+the+International+Terrestrial+Reference+Frame+for+earth+science+applications&rft.jtitle=Journal+of+Geophysical+Research%3A+Solid+Earth&rft.aulast=Altamimi&rft.aufirst=Zuheir&rft.au=Altamimi%2C+Zuheir&rft.au=Sillard%2C+Patrick&rft.au=Boucher%2C+Claude&rft.date=2002&rft.volume=107&rft.issue=B10&rft.pages=sid.%26nbsp%3BETG+2%E2%80%931%E2%80%93ETG+2%E2%80%9319&rft.pub=American+Geophysical+Union+%28AGU%29&rft_id=info:doi/10.1029%2F2001jb000561&rft.issn=0148-0227&rfr_id=info:sid/en.wikipedia.org:Nollmeridian"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-3"><a href="#cite_ref-3">^</a> <span class="reference-text"><cite style="font-style:normal" class="web"><a rel="nofollow" class="external text" href="https://www.ne.se/uppslagsverk/ordbok/svensk/nollmeridian">”nollmeridian - Ordbok - NE.se”</a>. <i><span>www.ne.se</span></i><span class="printonly">. <a rel="nofollow" class="external free" href="https://www.ne.se/uppslagsverk/ordbok/svensk/nollmeridian">https://www.ne.se/uppslagsverk/ordbok/svensk/nollmeridian</a></span><span class="reference-accessdate">. Läst 27 mars 2020</span>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=nollmeridian+-+Ordbok+-+NE.se&rft.atitle=www.ne.se&rft_id=https%3A%2F%2Fwww.ne.se%2Fuppslagsverk%2Fordbok%2Fsvensk%2Fnollmeridian&rfr_id=info:sid/en.wikipedia.org:Nollmeridian"><span style="display: none;"> </span></span><sup class="noprint Inline-Template"> [<a href="/wiki/Wikipedia:K%C3%A4llh%C3%A4nvisningar#Källor_som_kräver_inloggning" title="Wikipedia:Källhänvisningar">inloggning kan krävas</a>]</sup></span> </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> <span class="reference-text"><cite style="font-style:normal" class="news"><a rel="nofollow" class="external text" href="https://www.dn.se/resor/turistens-klagan-nollmeridianen-ligger-drygt-100-meter-fel/">”Turistens klagan: Nollmeridianen ligger drygt 100 meter fel”</a>. Dagens Nyheter. 13 augusti 2015<span class="printonly">. <a rel="nofollow" class="external free" href="https://www.dn.se/resor/turistens-klagan-nollmeridianen-ligger-drygt-100-meter-fel/">https://www.dn.se/resor/turistens-klagan-nollmeridianen-ligger-drygt-100-meter-fel/</a></span>.</cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=Turistens+klagan%3A+Nollmeridianen+ligger+drygt+100+meter+fel&rft.atitle=&rft.date=13+augusti+2015&rft.pub=Dagens+Nyheter&rft_id=https%3A%2F%2Fwww.dn.se%2Fresor%2Fturistens-klagan-nollmeridianen-ligger-drygt-100-meter-fel%2F&rfr_id=info:sid/en.wikipedia.org:Nollmeridian"><span style="display: none;"> </span></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Externa_länkar"><span id="Externa_l.C3.A4nkar"></span>Externa länkar</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nollmeridian&veaction=edit&section=7" title="Redigera avsnitt: Externa länkar" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nollmeridian&action=edit&section=7" title="Redigera avsnitts källkod: Externa länkar"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/15px-Commons-logo.svg.png" decoding="async" width="15" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/23px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> Wikimedia Commons har media som rör <a href="https://commons.wikimedia.org/wiki/Category:Greenwich_prime_meridian" class="extiw" title="commons:Category:Greenwich prime meridian">nollmeridian</a>.</li></ul> <style data-mw-deduplicate="TemplateStyles:r56287950">.mw-parser-output table.navbox{border:#aaa 1px solid;width:100%;margin:auto;margin-top:1em;clear:both;font-size:88%;text-align:center;padding:1px}.mw-parser-output link+table.navbox{margin-top:-1px}.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow,.mw-parser-output table.navbox th{text-align:center;padding-left:1em;padding-right:1em}.mw-parser-output .navbox-thlinkcolor .navbox-title button,.mw-parser-output .navbox-thlinkcolor .navbox-title .mw-collapsible-text,.mw-parser-output .navbox-thlinkcolor .navbox-title a{color:inherit}.mw-parser-output .nowraplinks a,.mw-parser-output .nowraplinks .selflink{white-space:nowrap}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right;font-weight:bold;padding-left:1em;padding-right:1em}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background:#fdfdfd}.mw-parser-output .navbox-list{border-color:#fdfdfd}.mw-parser-output .navbox-title,.mw-parser-output table.navbox th{background:#b0c4de}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background:#d0e0f5}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background:#deeafa}.mw-parser-output .navbox-even{background:#f7f7f7}.mw-parser-output .navbox-odd{background:transparent}</style><table cellspacing="0" class="navbox" style="border-spacing:0;"><tbody><tr><td style="padding:2px;"><table cellspacing="0" class="nowraplinks hlist auktoritetsdata navbox-inner" style="border-spacing:0;background:transparent;color:inherit;"><tbody><tr><th scope="row" class="navbox-group"><a href="/wiki/Auktoritetsdata" title="Auktoritetsdata">Auktoritetsdata</a></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px;"><div style="padding:0em 0.25em;"> • <a href="/wiki/Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a>: <span class="uid"><a rel="nofollow" class="external text" href="http://id.loc.gov/authorities/subjects/sh85078295">sh85078295</a></span> • <a href="/wiki/Biblioth%C3%A8que_nationale_de_France" title="Bibliothèque nationale de France">BNF</a>: <span class="uid"><a rel="nofollow" class="external text" href="http://catalogue.bnf.fr/ark:/12148/cb16518948g">cb16518948g</a> <a rel="nofollow" class="external text" href="http://data.bnf.fr/ark:/12148/cb16518948g">(data)</a></span></div></td></tr></tbody></table></td></tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; 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