Old Calendarists

Old Calendarists
Regions with significant populations
Greece250 000–2 million (1991); 500 000–800 000 (2005)
Romania1 million (1991); "probably over 1 million" (1999)
USAat least 2,000 (2011)
Religions
Christianity (Eastern Orthodoxy)

Old Calendarists (Greek: palaioimerologitai or palaioimerologites), also known as Old Feasters (palaioeortologitai), Genuine Orthodox Christians or True Orthodox Christians (GOC; Greek: Γνήσιοι Ορθόδοξοι Χριστιανοί, romanizedGnisioi Orthodoxoi Christianoi), are traditionalist groups of Eastern Orthodox Christians that separated from mainstream Eastern Orthodox churches because some of the latter adopted the revised Julian calendar while Old Calendarists remained committed to the Julian calendar.

Old Calendarists are not in communion with any mainstream Eastern Orthodox churches.

"Old Calendarists" is another name for the True Orthodox movement in Romania, Bulgaria, Greece and Cyprus.