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href="/wiki/Special:MyTalk" title="Discussion about changes from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header 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id="toc-Calendar_system-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">2</span> <span>References</span> </div> </a> <ul id="toc-References-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" > <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">Roman calendar</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 56 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-56" 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">56 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%A7%D9%84%D8%AA%D9%82%D9%88%D9%8A%D9%85_%D8%A7%D9%84%D8%B1%D9%88%D9%85%D8%A7%D9%86%D9%8A" title="التقويم الروماني – Arabic" lang="ar" hreflang="ar" data-title="التقويم الروماني" data-language-autonym="العربية" data-language-local-name="Arabic" 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/Calendariu_romanu" title="Calendariu romanu – Asturian" lang="ast" hreflang="ast" data-title="Calendariu romanu" data-language-autonym="Asturianu" data-language-local-name="Asturian" 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/Q%C9%99dim_Roma_t%C9%99qvimi" title="Qədim Roma təqvimi – Azerbaijani" lang="az" hreflang="az" data-title="Qədim Roma təqvimi" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/L%C3%B4-m%C3%A1_le%CC%8Dk-hoat" title="Lô-má le̍k-hoat – Minnan" lang="nan" hreflang="nan" data-title="Lô-má le̍k-hoat" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A0%D0%B8%D0%BC%D1%81%D0%BA%D0%B8_%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80" title="Римски календар – Bulgarian" lang="bg" hreflang="bg" data-title="Римски календар" data-language-autonym="Български" data-language-local-name="Bulgarian" 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/Rimski_kalendar" title="Rimski kalendar – Bosnian" lang="bs" hreflang="bs" data-title="Rimski kalendar" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Deiziadur_roman" title="Deiziadur roman – Breton" lang="br" hreflang="br" data-title="Deiziadur roman" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Calendari_rom%C3%A0" title="Calendari romà – Catalan" lang="ca" hreflang="ca" data-title="Calendari romà" 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/%C5%98%C3%ADmsk%C3%BD_kalend%C3%A1%C5%99" title="Římský kalendář – Czech" lang="cs" hreflang="cs" data-title="Římský kalendář" 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/Romersk_kalender" title="Romersk kalender – Danish" lang="da" hreflang="da" data-title="Romersk kalender" 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/R%C3%B6mischer_Kalender" title="Römischer Kalender – German" lang="de" hreflang="de" data-title="Römischer Kalender" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A1%CF%89%CE%BC%CE%B1%CF%8A%CE%BA%CF%8C_%CE%B7%CE%BC%CE%B5%CF%81%CE%BF%CE%BB%CF%8C%CE%B3%CE%B9%CE%BF" title="Ρωμαϊκό ημερολόγιο – Greek" lang="el" hreflang="el" data-title="Ρωμαϊκό ημερολόγιο" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Roman_calendar" title="Roman calendar – English" lang="en" hreflang="en" data-title="Roman calendar" data-language-autonym="English" data-language-local-name="English" 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/Calendario_romano" title="Calendario romano – Spanish" lang="es" hreflang="es" data-title="Calendario romano" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Erromatar_egutegia" title="Erromatar egutegia – Basque" lang="eu" hreflang="eu" data-title="Erromatar egutegia" data-language-autonym="Euskara" data-language-local-name="Basque" 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/%DA%AF%D8%A7%D9%87%E2%80%8C%D8%B4%D9%85%D8%A7%D8%B1%DB%8C_%D8%B1%D9%88%D9%85%DB%8C" title="گاه‌شماری رومی – Persian" lang="fa" hreflang="fa" data-title="گاه‌شماری رومی" 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/Calendrier_romain" title="Calendrier romain – French" lang="fr" hreflang="fr" data-title="Calendrier romain" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Calendario_romano" title="Calendario romano – Galician" lang="gl" hreflang="gl" data-title="Calendario romano" data-language-autonym="Galego" data-language-local-name="Galician" 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/%EB%A1%9C%EB%A7%88%EB%A0%A5" title="로마력 – Korean" lang="ko" hreflang="ko" data-title="로마력" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Rimski_kalendar" title="Rimski kalendar – Croatian" lang="hr" hreflang="hr" data-title="Rimski kalendar" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Romana_kalendario" title="Romana kalendario – Ido" lang="io" hreflang="io" data-title="Romana kalendario" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kalender_Romawi" title="Kalender Romawi – Indonesian" lang="id" hreflang="id" data-title="Kalender Romawi" 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-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Calendario_roman" title="Calendario roman – Interlingua" lang="ia" hreflang="ia" data-title="Calendario roman" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Calendario_romano" title="Calendario romano – Italian" lang="it" hreflang="it" data-title="Calendario romano" 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%9C%D7%95%D7%97_%D7%94%D7%A9%D7%A0%D7%94_%D7%94%D7%A8%D7%95%D7%9E%D7%99" title="לוח השנה הרומי – Hebrew" lang="he" hreflang="he" data-title="לוח השנה הרומי" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A0%E1%83%9D%E1%83%9B%E1%83%90%E1%83%A3%E1%83%9A%E1%83%98_%E1%83%99%E1%83%90%E1%83%9A%E1%83%94%E1%83%9C%E1%83%93%E1%83%90%E1%83%A0%E1%83%98" title="რომაული კალენდარი – Georgian" lang="ka" hreflang="ka" data-title="რომაული კალენდარი" data-language-autonym="ქართული" data-language-local-name="Georgian" 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/Kalandriye_women" title="Kalandriye women – Haitian Creole" lang="ht" hreflang="ht" data-title="Kalandriye women" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haitian Creole" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/Kalandriy%C3%A9_romen" title="Kalandriyé romen – Guianan Creole" lang="gcr" hreflang="gcr" data-title="Kalandriyé romen" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Calendarium_Romanum" title="Calendarium Romanum – Latin" lang="la" hreflang="la" data-title="Calendarium Romanum" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Rom%C4%97n%C5%B3_kalendorius" title="Romėnų kalendorius – Lithuanian" lang="lt" hreflang="lt" data-title="Romėnų kalendorius" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/latmo_veldetri" title="latmo veldetri – Lojban" lang="jbo" hreflang="jbo" data-title="latmo veldetri" data-language-autonym="La .lojban." data-language-local-name="Lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Calend%C3%A0re_rom%C3%A0" title="Calendàre romà – Lombard" lang="lmo" hreflang="lmo" data-title="Calendàre romà" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/%C3%93kori_r%C3%B3mai_napt%C3%A1r" title="Ókori római naptár – Hungarian" lang="hu" hreflang="hu" data-title="Ókori római naptár" 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%A0%D0%B8%D0%BC%D1%81%D0%BA%D0%B8_%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80" title="Римски календар – Macedonian" lang="mk" hreflang="mk" data-title="Римски календар" 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%B1%E0%B5%8B%E0%B4%AE%E0%B5%BB_%E0%B4%95%E0%B4%B2%E0%B4%A3%E0%B5%8D%E0%B4%9F%E0%B5%BC" title="റോമൻ കലണ്ടർ – Malayalam" lang="ml" hreflang="ml" data-title="റോമൻ കലണ്ടർ" 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%A7%D9%84%D8%AA%D9%82%D9%88%D9%8A%D9%85_%D8%A7%D9%84%D8%B1%D9%88%D9%85%D8%A7%D9%86%D9%89" title="التقويم الرومانى – Egyptian Arabic" lang="arz" hreflang="arz" data-title="التقويم الرومانى" 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/Takwim_Rom" title="Takwim Rom – Malay" lang="ms" hreflang="ms" data-title="Takwim Rom" 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/Romeinse_kalender" title="Romeinse kalender – Dutch" lang="nl" hreflang="nl" data-title="Romeinse kalender" 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%83%AD%E3%83%BC%E3%83%9E%E6%9A%A6" title="ローマ暦 – Japanese" lang="ja" hreflang="ja" data-title="ローマ暦" 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/Den_romerske_kalender" title="Den romerske kalender – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Den romerske kalender" 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/Den_romerske_kalenderen" title="Den romerske kalenderen – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Den romerske kalenderen" 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-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%B1%D9%88%D9%85%D9%8A_%DA%A9%D9%84%D9%8A%D8%B2" title="رومي کليز – Pashto" lang="ps" hreflang="ps" data-title="رومي کليز" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Kalendarz_rzymski" title="Kalendarz rzymski – Polish" lang="pl" hreflang="pl" data-title="Kalendarz rzymski" 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/Calend%C3%A1rio_romano" title="Calendário romano – Portuguese" lang="pt" hreflang="pt" data-title="Calendário romano" 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/Calendarul_roman" title="Calendarul roman – Romanian" lang="ro" hreflang="ro" data-title="Calendarul roman" 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%A0%D0%B8%D0%BC%D1%81%D0%BA%D0%B8%D0%B9_%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80%D1%8C" title="Римский календарь – Russian" lang="ru" hreflang="ru" data-title="Римский календарь" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Rimski_koledar" title="Rimski koledar – Slovenian" lang="sl" hreflang="sl" data-title="Rimski koledar" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A0%D0%B8%D0%BC%D1%81%D0%BA%D0%B8_%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80" title="Римски календар – Serbian" lang="sr" hreflang="sr" data-title="Римски календар" 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/Rimski_kalendar" title="Rimski kalendar – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Rimski kalendar" 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/Roomalainen_kalenteri" title="Roomalainen kalenteri – Finnish" lang="fi" hreflang="fi" data-title="Roomalainen kalenteri" 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/Romerska_kalendern" title="Romerska kalendern – Swedish" lang="sv" hreflang="sv" data-title="Romerska kalendern" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Taswast_ta%E1%B9%9B%E1%B9%9Bumant" title="Taswast taṛṛumant – Kabyle" lang="kab" hreflang="kab" data-title="Taswast taṛṛumant" data-language-autonym="Taqbaylit" data-language-local-name="Kabyle" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Roma_takvimi" title="Roma takvimi – Turkish" lang="tr" hreflang="tr" data-title="Roma takvimi" 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%A0%D0%B8%D0%BC%D1%81%D1%8C%D0%BA%D0%B8%D0%B9_%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80" title="Римський календар – Ukrainian" lang="uk" hreflang="uk" data-title="Римський календар" data-language-autonym="Українська" data-language-local-name="Ukrainian" 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/L%E1%BB%8Bch_La_M%C3%A3" title="Lịch La Mã – Vietnamese" lang="vi" hreflang="vi" data-title="Lịch La Mã" 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-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%BE%85%E9%A6%AC%E6%9B%86" title="羅馬曆 – Chinese" lang="zh" hreflang="zh" data-title="羅馬曆" data-language-autonym="中文" data-language-local-name="Chinese" 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class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Simple English 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"><p>The <b>Roman calendar</b> was a <a href="/wiki/Lunar_calendar" title="Lunar calendar">lunar calendar</a> used by the <a href="/wiki/Roman_Kingdom" title="Roman Kingdom">Roman Kingdom</a> and the <a href="/wiki/Roman_Republic" title="Roman Republic">Roman Republic</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Calendar_system">Calendar system</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Roman_calendar&veaction=edit&section=1" title="Change section: Calendar system" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Roman_calendar&action=edit&section=1" title="Edit section's source code: Calendar system"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The year started on 1 March and had only 304 days or 10 months (<a href="/wiki/March" title="March">March</a>, <a href="/wiki/April" title="April">April</a>, <a href="/wiki/May" title="May">May</a>, <a href="/wiki/June" title="June">June</a>, <a href="/wiki/July" title="July">Quintilis</a>, <a href="/wiki/August" title="August">Sextilis</a>, <a href="/wiki/September" title="September">September</a>, <a href="/wiki/October" title="October">October</a>, <a href="/wiki/November" title="November">November</a> and <a href="/wiki/December" title="December">December</a>). These 304 days were followed by an <a href="https://simple.wiktionary.org/wiki/unnamed" class="extiw" title="wikt:unnamed">unnamed</a> 50-day winter period. The Roman king <a href="/wiki/Numa_Pompilius" title="Numa Pompilius">Numa Pompilius</a> (c. 715-673 BC) <a href="https://simple.wiktionary.org/wiki/introduced" class="extiw" title="wikt:introduced">introduced</a> February and January (in that order) between December and March, increasing the length of the year to 354 or 355 days. In 450 BC, February was moved to its current position between January and March. </p><p>In order to make up for the lack of days in a year, an extra month, Intercalaris or Mercedonius, (allegedly with 22 or 23 days) was introduced in some years. In an 8 year period the length of the years were: </p> <ol><li>12 months or 355 days</li> <li>13 months or 377 days</li> <li>12 months or 355 days</li> <li>13 months or 378 days</li> <li>12 months or 355 days</li> <li>13 months or 377 days</li> <li>12 months or 355 days</li> <li>13 months or 378 days</li></ol> <p>A total of 2930 days corresponding to a year of 366¼ days. This year was discovered to be too long, and therefore 7 days were later dropped from the 8th year, yielding 365.375 days per year. </p><p>It was the duty of the <a href="/w/index.php?title=Priesthood&action=edit&redlink=1" class="new" title="Priesthood (not yet started)">priesthood</a> not to have any mistake of the <a href="/wiki/Intercalation_(timekeeping)" title="Intercalation (timekeeping)">intercalary</a> month. However, <a href="/wiki/Leap_year" title="Leap year">leap years</a> were considered unlucky. Therefore, they were avoided in time of crisis, such as the <a href="/wiki/Second_Punic_War" title="Second Punic War">Second Punic War</a>. In order to fix the problem, <a href="/wiki/Julius_Caesar" title="Julius Caesar">Julius Caesar</a> made his <a href="/wiki/Julian_calendar" title="Julian calendar">famous calendar</a> reform in 45 BC.<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> </p> <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=Roman_calendar&veaction=edit&section=2" title="Change section: References" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Roman_calendar&action=edit&section=2" title="Edit section's source code: References"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.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"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r9724332">.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.webexhibits.org/calendars/calendar-christian.html">"The Christian Calendar"</a><span class="reference-accessdate">. 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