Christmas music is typically played on the radio starting around mid-November until the end of December. The exact date when it starts playing depends on the radio station and their programming schedule. Some stations might begin playing Christmas music as early as Halloween, while others might wait until after Thanksgiving. The length of time that Christmas music is played on the radio also varies, with some stations playing it all day long throughout the holiday season, while others might only play it during certain hours of the day or during specific programs.