the twelve days of christmas are the twelve days leading up to Christmas Day, which is celebrated on December 25th. it is a time when people around the world celebrate the birth of Jesus Christ, the son of God. during these twelve days, people often exchange gifts, attend religious services, and participate in holiday traditions and customs. the twelve days of Christmas are also associated with the song "the twelve days of Christmas," which is a popular Christmas carol that lists the various gifts that were given to Jesus by the Magi, also known as the three wise men.