Christmas is celebrated annually on December 25th to commemorate the birth of Jesus Christ. While the actual date of his birth is uncertain, Christmas was established in the 4th century by the Catholic Church to coincide with pre-existing pagan winter solstice festivals. The traditions and customs associated with Christmas vary around the world, with some opening presents on different days like St. Nicholas' Eve or Epiphany and others celebrating with special Christmas meals that feature foods native to their country.