In the Gregorian calendar, New Year's Eve, also known as Old Year's Day, is the evening or the entire day of the last day of the year, 31 December.

December 26, the day after Christmas, is the Feast of St Stephen, the first Christian martyr. It is also known as Boxing Day, a secular holiday celebrated in parts of the Commonwealth, including Canada.

Christmas is an annual festival commemorating the birth of Jesus Christ, observed primarily on December 25 as a religious and cultural celebration among billions of people around the world.