Are you talking about the end of the Mayan Calendar?

So, the world's going to end December 21st, 2012, huh....?

Since Ceasar introduced leap years in 45BC, there have been 515 leap years including this year(so im told). Without those extra days, the date would be the ~12 of November, 2013.

Since the Mayan Calendar didn't use leap years, the apocalypse (21st of the 12th 2012) was ~11 months ago... So congratulations on surviving!