The Old Calendarist Schism

Adoption split the Orthodox world rather than uniting it. The Ecumenical Patriarchate of Constantinople, the Church of Greece, the Church of Cyprus, the Patriarchates of Alexandria and Antioch, and later the Romanian Orthodox Church, took up the revised reckoning for their fixed feasts. The Patriarchates of Jerusalem and Russia, along with Serbia, Georgia and Mount Athos, kept the unrevised Julian calendar entire, so the Nativity itself now falls on two different calendar dates depending on which jurisdiction a believer belongs to. Inside the churches that did adopt the change, a further division opened. Communities that considered the reform an unauthorised departure from received practice, and in some readings an opening toward union with Rome, broke communion with their own hierarchies and organised themselves as Old Calendarist bodies, later gaining their own bishops and, in places, their own parallel church structures; the movement in Romania is a documented case of a church born directly out of state pressure to conform to the new reckoning. Because the Paschal cycle was left untouched by the 1923 reform, the split is visible only in the fixed calendar of saints and feasts. Old and New Calendarists keep the same Pascha every year, which is why the disagreement reads as a dispute over dates rather than a doctrinal rupture.