Easter: Apex of Christian life
The two most celebrated feasts in the Christian world are Christmas and Easter. In the Catholic world, which used to be the western part of the Roman empire, the most celebrated holiday is Christmas day. Among Orthodox churches, which used to be the eastern part of the Roman empire, Easter is the most important religious festival in their liturgical calendar. Every other religious celebration including Christmas is considered secondary in importance to the celebration of the resurrection of Jesus Christ.
