- The Feast of the Resurrection of Christ, also known as Pascha
(from the Hebrew word for Passover). Christ proclaimed Himself as the true Passover and offered Himself as a sacrifice. Orthodox Christians celebrate Easter according to the decree of the Council of Nicea in A.D. 325: the first Sunday following the first full moon following the spring equinox (thus, following the Jewish Passover). Thus, Orthodox Easter is often one, four, or five weeks after the western Easter.