Auld Lang Syne was transcribed and published by Scottish poet Robert Burns, based on earlier Scots ballads. The words "Auld Lang Syne" can best be translated as "times gone by".
In Scots Syne is pronounced [saIn] (Sampa). Not zine [zaIn] as many numpties do every Hogmanay.
Guy Lombardo popularized the association of the song with the stroke of midnight on New Year's Eve.