Go Caroling Day takes place on December 20, 2018. A Christmas carol is a song whose lyrics are on the theme of Christmas or the winter season in general, and which is traditionally sung in the period immediately surrounding the holiday. Christmas carols may be regarded as a subset of the broader category of Christmas music.
Christmas carols and songs written in the United States range from "Jingle Bells," and "O Little Town of Bethlehem" to "Away in a Manger," and numerous others of varying genres. (With material from: Wikipedia)