Christmastide is a season of the liturgical year in most Christian churches. In some Christian denominations, Christmastide is identical to Twelvetide, a similar concept.
When should you start the 12 days of Christmas?
The 12 days of Christmas begin on Christmas Day, December 25, and last right through until January 6, also known as Three Kings' Day or Epiphany. The period has been celebrated since before the middle ages but was updated over time to include prominent figures in Christian history.
What season follows Christmastide?
Most of 24 December is thus not part of Christmastide, but of Advent, the season in the Church Year that precedes Christmastide. In many liturgical calendars, Christmastide is followed at sunset on 5 January, known as Twelfth Night, by the closely related season of Epiphanytide.