The Mayan calendar moves in cycles with the last cycle ending in December 2012. This has often been interpreted as the world will end on 21 December 2012, at 11:11

Mexicans And Mayans Calendar System

My Birthday in Mayan date

reading the Maya calendar

the maya calendar system records a series of recurring cycles of time based on the movements of the Sun, Moon and Planets. Any given date repeats at cyclic intervals, just as,for example January 1st in the Gregorian (our) calendar repeats every time the earth completes a revolution around the sun. A complete Maya Long Count cycle is 5,125 years long. The long count calendar keeps track of the days that have passed since the mythical starting date of the Maya creation, August 11, 3114 BCE.

Units of Time