In the Church’s liturgical year, Christmas begins on Christmas Eve and does not end until the evening of the feast of the Baptism of the Lord (January 10 this year).
If you would like some help observing the season, try looking into the resources on the “Celebrating Christmas” page of Creighton University’s Online Ministries
HERE. You can find prayers for each day of the Christmas season, as well as other prayers and reflections to help you open yourself to spiritual growth during the season.
Another way to celebrate the season is to observe the traditional twelve days of Christmas, which fall between Christmas and the feast of the Epiphany (traditionally on January 6). Although traditions differ slightly in their reckoning, one begins counting on Christmas Day, so that January 5 becomes the twelfth day of Christmas. The eve of Epiphany on January 5 is Twelfth Night, observed in 17th century England with the performance of plays like Shakespeare’s of the same name.
However you choose to observe the season, may the joy and peace of Christmas remain with you and yours throughout the new year!