Christmastide
Christmastide, or the Christmas season, is a period in many Western Christian liturgical calendars that follows Christmas Day. It centers on the celebration of the Incarnation and the birth of Jesus and runs for a set span depending on tradition. In common Western practice, Christmastide begins on December 25 and lasts until the Feast of the Baptism of the Lord, the Sunday after Epiphany; in some calendars it extends to Epiphany on January 6. The traditional Twelve Days of Christmas refer to December 25 through January 5, with Epiphany marking the season's end in other traditions.
During Christmastide, churches hold Christmas Mass or Divine Liturgy, festive readings from the Gospels, and carols.
Etymology and history: The term derives from Old English Cristes mæs tid, meaning "the time of Christ's
Regional practices vary: in some Eastern Christian churches, Christmas is celebrated on January 7 (Gregorian), and