Editing Revised Julian calendar (section)

==Adoption==
The new calendar has been adopted by Orthodox churches as follows:

* '''1920:''' In Finland Orthodox faithful began attending Lutheran churches on holy days<ref>{{cite web|url=http://www.ncregister.com/blog/common-date-for-easter|last=Murzaku|first=Ines|title=Catholics and Orthodox are closer than ever to a common date for Easter|website=National Catholic Register|date=22 April 2021|accessdate=20 July 2023}}</ref>
* '''October 1921''' Finland officially switched to the Gregorian calendar, including the Gregorian Paschalion<ref>{{cite web|url=http://www.johnsanidopoulos.com/2013/06/the-date-of-orthodox-easter-in-finland.html|last=Sanidopoulos|first=John|title=The date of Orthodox Easter in Finland and Estonia|date=12 June 2013|accessdate=20 July 2023}}</ref>
* '''1923:''' Estonia (accepted the Gregorian calendar, including the Gregorian Paschalion, but in 1945 joined the Moscow Patriarchate and reverted to Julian; after re-establishing in 1996, the [[Estonian Apostolic Orthodox Church]] adopted the Revised Julian calendar in 2012)
*'''10/23 March 1924:''' Constantinople, Cyprus and Greece
*'''1/14 October 1924:''' Poland (Very few parishes changed - on 15 June 2014 the Church switched back, but individual parishes may use the Revised Julian calendar if they wish)
*'''1/14 October 1924:''' Romania 
*'''1/14 October 1928:''' Alexandria and Antioch
* The [[Orthodox Autocephalous Church of Albania|Albanian Orthodox Church]] became autocephalous on 12 April 1937
* '''20 December 1968:''' [[Bulgarian Orthodox Church|Bulgaria]]{{sfn|Clogg|2002|pp=8–9}}
* '''1 September 2023:''' [[Orthodox Church of Ukraine]]<ref>{{Cite news |last=RFE/RL |title=Orthodox Church Of Ukraine Approves Calendar Switch In Widening Diversion From Russia |language=en |work=RadioFreeEurope/RadioLiberty |url=https://www.rferl.org/a/orthodox-church-ukraine-approves-calendar-switch-russia/32426292.html |access-date=25 May 2023}}</ref><ref>{{Cite web |title=Orthodox Church of Ukraine finally adopts new calendar |url=https://english.nv.ua/life/ocu-approves-switch-to-revised-julian-calendar-ukraine-news-50342167.html |access-date=31 July 2023 |website=english.nv.ua |language=en}}</ref><ref name="OCUnc162722">{{cite news |title=OCU switches to a new calendar|url=https://www.istpravda.com.ua/short/2023/05/24/162722/|work=[[Istorychna Pravda]]|date=24 May 2023|access-date=24 May 2023|language=Ukrainian}}</ref>

As of 2025, the Revised Julian Calendar has been adopted by 11 Churches, known as the [[New Calendarists]]:
# [[Ecumenical Patriarchate of Constantinople]]
# [[Greek Orthodox Patriarchate of Alexandria]]
# [[Greek Orthodox Patriarchate of Antioch]]
# [[Bulgarian Orthodox Church]]
# [[Romanian Orthodox Church]]
# [[Church of Cyprus]]
# [[Church of Greece]]
# [[Albanian Orthodox Church]]
# [[Orthodox Church of the Czech Lands and Slovakia]]
# [[Orthodox Church in America]]
# [[Orthodox Church of Ukraine]]

The new calendar has not been adopted by the [[Old Calendarists]] and by the following Churches:
# [[Greek Orthodox Patriarchate of Jerusalem]]
# [[Georgian Orthodox Church]]
# [[Serbian Orthodox Church]]
# [[Russian Orthodox Church]]
# [[Macedonian Orthodox Church]]
# [[Polish Orthodox Church]]