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 as the period
from Christmas Day to the evening of January the 5th which is the day before the
start of the Epiphany.
This period is also commonly known as the twelve days of Christmas, as referred to
in the Christmas carol or Yuletide, as in "Deck the Halls". In the church of England,
Christmastide includes Epiphany and ends at Candlemas. Candlemas is a traditional
Christian festival that commemorates the purification of Mary 40 days after the
birth of her son. During the season festivities are enjoyed and buildings decorated.
In some countries, by superstition it is bad luck to leave the decorations up
after twelfth night.