A friend showed me this yesterday, thought you all would like it.
WARNING: I am about to burst your doomsday bubble for all of you who worry about the end of the world that is supposedly coming in December of this year.
There have been about 514 Leap Years since Caesaer created it in 45BC. Without the extra day every 4 years, today would be July 28, 2013.
Also, the Mayan calendar did not account for the leap year. So technically, according to that Mayan theory, the world should have ended about 7 months ago. You can breathe a sigh of relief now. You're welcome.