"Auld Lang Syne" is a popular Scottish song, particularly in the English-speaking world. Traditionally, it is sung to bid farewell to the old year at the stroke of midnight on New Year's Eve/Hogmanay. By extension, it is also often heard at funerals, graduations, and as a farewell or ending to other occasions; for instance, many branches of the Scouting movement use it to close jamborees and other... Wikipedia