Christmastide (also Christmas or the Christmas season) is one of the seasons of the liturgical year of most Christian churches. It tends to be defined (with slight variations) as the period from Christmas Eve to the evening of 5 January, the day before Epiphany. This period is also commonly known as the Twelve Days of Christmas, as referred to in the Christmas carol of the same name, or Yuletide, as in "Deck the Halls".