National Christmas Movie Marathon Day is observed worldwide every December 23. This day encourages people to celebrate the holiday spirit by watching Christmas movies with family and friends. The tradition of family Christmas movie marathons likely began in the 1980s with the rise of home video, allowing viewers to enjoy their favorite films anytime. Christmas movies span various genres, providing something for everyone, and include classics like "It's a Wonderful Life," which helped popularize the genre. While some films are specifically Christmas-themed, others, such as "Die Hard," have become associated with the holiday despite not being originally intended as Christmas movies. To celebrate, individuals often prepare snacks like popcorn or hot cocoa and binge-watch their favorite holiday films.