The question is, what time zone decides when the world ends? Does it start once the east hits 12:00, or when the pacific hits 12:00?
Funny story about this, when everyone was all freaked out about the year 2000 thing, one of my old teachers told me he called up a buddy in Europe and asked him if the world ended at around 9 o'clock Pacific time, which gave him three hours to spare just to prove to his wife it was all a hoax. Needless to say, the world was still intact.