21.12.2012 MAYAN PROPHECIES A HOAX !!! Though the Mayans were very advanced and made solid astronomical observations, there was never any doomsday prophecy made. This has been confirmed by genuine Mayan scholars. The Mayan calendar (like all calendars) had to end somewhere. Not only does it end, but it begins again in a new cycle, just as your calendar ends on December 31 and begins again on January 1.