In some Catholic traditions, the Christmas tree is taken down on the feast of Epiphany, also known as Three Kings' Day, which falls on January 6th. The Epiphany is a significant holiday in the Catholic Church, commemorating the arrival of the three wise men in Bethlehem to visit the infant Jesus. Taking down the Christmas tree on this day symbolizes the end of the Christmas season and the transition into the season of Epiphany. However, it is important to note that practices may vary among different families and regions, and some may choose to leave their Christmas trees up until the start of the new year.