Russian Orthodox Church Christmas 2025. Orthodox calendar (russian orthodox church) with feasts and fasts for years from 1900 to 2099 (perpetual calendar). A large majority of russia’s 140 million people identify as members of the russian orthodox church, which calculates the date of christmas based on.

A russian orthodox church priest makes the sign of the cross during an orthodox christmas service at the church of the holy martyr tatiana near the kremlin wall in moscow,. Liturgical celebrations of the christmas season.