Multiple websites describe Christmas, its origins, its traditions and customs. The History
website best describes it in its first paragraph:
"Christmas is both a sacred religious holiday and a worldwide cultural and commercial phenomenon. For two millennia, people around the world have been observing it
with traditions and practices that are both religious and secular in nature. Christians celebrate Christmas Day as the anniversary of the birth of Jesus of Nazareth, a spiritual leader whose
teachings form the basis of their religion. Popular customs include exchanginging gifts, decorating Christmas trees, attending church, sharing meals with family and friends and, of course, waiting
for Santa Claus to arrive. December 25-Christmas Day-has been a federal holiday in the United States since 1870."