In addition to the Russian, Serbian, and Ukrainian Orthodox Churches already mentioned, the following Eastern Orthodox (some of which fall into what are sometimes termed "non-canonical" Churches or "Churches of irregular status") observe Christmas on January 7:
- Belarusan Orthodox (except those US churches subject to the Ecumenical Patriarchate)
- Georgian Orthodox Church
- Macedonian Orthodox Church
- Estonian Orthodox (only the Eastonian Orthodox diocese under authority of the Moscow Patriarchate)
- Moldavan Orthodox (only those Moldavan Orthodox churches under authority of the Moscow Patriarchate)
- Greek Orthodox Patriarchate of Jerusalem
- Greek Orthodox monasteries on Mount Athos (with a single exception, I believe)
- Old Calendrist Greek Orthodox Churches
- Old Calendar Orthodox Church of Bulgaria
- Old Calendar Orthodox Church of Romania
- Russian Orthodox Old Ritualists/Old Believers
- Russian Orthodox Church Outside Russia
(That actually amounts to the majority of Eastern Orthodox, primarily because of the large numbers of Russian and Ukrainian Orthodox.)
All other of the Eastern Orthodox Churches observe December 25.
As Erini reported, the Coptic, Ethiopian, and Eritrean Orthodox Churches observe January 7 as Christmas. The Ancient Church of the East also does so.
The Syriac Orthodox Church observes December 25, as do both the Malankara Orthodox Syriac and Indian Orthodox (Malankara Syrian Orthodox) Churches, as Crusader reported.
As Yeznik notes, the Armenian Orthodox observe January 6,
except that, in the Armenian Orthodox Patriarchate of Jerusalem, it is observed on January 19, as CopticOrthodoxy stated.
Eastern Catholic Churches observe December 25, with the exception of the Russian Greek-Catholics and
some Ukrainian Greek-Catholics, who adhere to the Old Calendar (in the case of Ukrainian Greek-Catholics in the diaspora - particularly in the US and Canada - differences in calendar usage vary sometimes from parish to parish in the same eparchy
)
The Oriental Catholic Churches all observe December 25 as Christmas, as also does the Assyrian Church of the East and The (Assyrian) Thomas Christians.
Many years,
Neil
!
