Interesting fact... 1972 was the longest year in history. Normally, on 31 December, the clock goes from 11:59:59 (or 23:59:59) on December 31st to 12:00:00 (or 0:00:00) on January 1st, however, on 31 December 1972, the clock actually went from 11:59:59 on December 31, 1972 to 11:60:00 December 31, 1972 then to 12:00:00 on January 1, 1973. Weird, I know!