Christmas is celebrated on December 25th to commemorate the birth of Jesus Christ as well as to ring in the new year. It involves families exchanging presents on Christmas Eve and Christmas Day, and ringing in the new year at midnight on December 31st by eating 12 grapes, one for each chime of the clock. People also celebrate Epiphany on January 6th, remembering the day the three wise men arrived to present gifts to baby Jesus.