Christmas is celebrated annually on December 25th as the birth of Jesus Christ. It is a public holiday in many countries and celebrated by Christians and non-Christians alike with both religious and secular traditions. Popular customs include gift giving, decorating Christmas trees, attending church services, and the exchange of greeting cards. Santa Claus, known by other names in some cultures, brings gifts to children and is depicted as a large, jolly man dressed in red based on drawings by Thomas Nast in the 19th century. Christmas traditions vary around the world but often incorporate religious elements like Nativity scenes as well as secular customs like decorations, music, food, and time with family.