<Tr> <Th> Frequency </Th> <Td> annual </Td> </Tr> <Tr> <Th> Related to </Th> <Td> Christmas Day, Christmastide, Twelfth Night, Epiphany, and Epiphanytide </Td> </Tr> <P> The Twelve Days of Christmas, also known as Twelvetide, is a festive Christian season celebrating the Nativity of Jesus Christ . In most Western ecclesiastical traditions, "Christmas Day" is considered the "First Day of Christmas" and the Twelve Days are 25 December--5 January, inclusive . For many Christian denominations; for example, the Anglican Communion and Lutheran Church, the Twelve Days are identical to Christmastide, but for others, e.g., the Roman Catholic Church, "Christmastide" lasts longer than the Twelve Days of Christmas . </P> <P> Because the Armenian Apostolic Church and Armenian Catholic Church celebrate the Birth and Baptism of Christ on the same day, they do not have a series of twelve days between a feast of Christmas and a feast of Epiphany . </P>

When are the twelve days of christmas celebrated