Editing Epoch (section)

=== Pre-modern eras ===
* The [[Yoruba calendar]] (''Kọ́jọ́dá'') uses 8042 BC as the epoch, regarded as the year of the creation of [[Ile-Ife]] by the god [[Obatala]], also regarded as the creation of the earth.
* ''[[Anno Mundi]]'' [lit. "Year of the World"] (years since the creation of the world) is used in 
** the [[Byzantine calendar]] (5509 BC).
** the [[Hebrew calendar]] (3761 BC).<ref>{{cite web |url=http://www.myjewishlearning.com/article/counting-the-years/ |title=Counting the Jewish Years |website=myjewishlearning.com |last=Solomin |first=Rachel M. |access-date=2016-12-27 |archive-date=2020-02-12 |archive-url=https://web.archive.org/web/20200212083037/https://www.myjewishlearning.com/article/counting-the-years/ |url-status=live }}</ref><ref>{{cite web |last=Lee |first=Scott E. |date=2006 |url=http://www.rosettacalendar.com/calendars.html |title=Overview of Calendars |website=rosettacalendar.com |access-date=2006-10-23 |archive-date=2020-08-20 |archive-url=https://web.archive.org/web/20200820000454/https://www.rosettacalendar.com/calendars.html |url-status=live }}</ref>
* The [[Mesoamerican Long Count Calendar]] uses the creation of the fourth world in 3114 BC.
* [[Olympiad]]s, the ancient Greek era of four-year periods between [[Ancient Olympic Games|Olympic Games]], beginning in 776 BC.
* ''[[Ab urbe condita]]'' ("from the foundation of [[Rome|the city]]"), used to some extent by [[Roman calendar]]s of the Roman imperial period (753 BC).
*  [[Buddhist calendar]]s tend to use the epoch of 544 BC (date of [[Buddha]]'s ''[[parinirvana]]'').
* The term [[Hindu calendar]] may refer to a number of traditional Indian calendars. A notable example of a Hindu epoch is the ''[[Vikram Samvat]]'' (58 BC),<ref>{{Cite book| edition = 3rd| publisher = Cambridge University Press| isbn = 978-0-521-70238-6| last1 = Dershowitz| first1 = Nachum| author-link1 = Nachum Dershowitz | last2 = Reingold| first2 = Edward M.| author-link2 = Edward Reingold  |title = Calendrical Calculations|title-link= Calendrical Calculations | date = 2008 | page = [https://archive.org/details/calendricalcalcu00ders/page/n321 289]}}</ref> also used in modern times as the national calendars of [[Nepal]] and [[Bangladesh]].
* The [[Julian calendar|Julian]] and [[Gregorian calendar|Gregorian]] calendars use as epoch the [[Incarnation (Christianity)|Incarnation of Jesus]] as calculated in the 6th century by [[Dionysius Exiguus]].<ref>{{cite book |last1=Blackburn |first1=B |last2=Holford-Strevens |first2=L |date=2003 |title=The Oxford Companion to the Year: An exploration of calendar customs and time-reckoning |publisher=Oxford University Press |chapter=Incarnation era |page=881}}</ref> (Subsequent research has shown that this moment is about four years after the best estimate for the [[date of birth of Jesus]].) This epoch was applied retrospectively to the Julian calendar, long after its original creation by [[Julius Caesar]]. 
* The epoch of the [[Islamic calendar]] is the ''[[Hijra (Islam)|Hijra]]'' (AD 622).  The year count in this calendar shifts relative to the solar year count, as the calendar is [[lunar calendar|purely lunar]]: its year consists of 12 [[lunation]]s and is thus ten or eleven days shorter than a solar year. This calendar denotes "lunar years" as ''Anno Hegiræ'' ([since] the year of the ''[[Hijra (Islam)|Hijra]]'') or ''AH''. This calendar is used in [[Sunni Islam]] and related sects.
* The epoch of the official [[Iranian calendars|Iranian calendar]] is also the ''Hijra'', but it is a [[solar calendar]]; each year begins at the Northern spring equinox. This calendar is used in [[Shia Islam]] and related sects.