The End of our (the Mayan) World is March 20th, 2010 and not Dec 21, 2012.
"Just as in the Pharaonic Egyptian calendar December 25, 3117 BC is the correct starting date for the Maya calendar (corrected for the tropical year),as will be demonstrated below.
Maya
scholars have failed to adjust the continuous count of solar days of
the Maya Long Count to a "longer" count including intercalation for the
tropical year. When this adjustment is made, the Maya and Pharaonic
calendars both start on December 25, 3117 BC (-3116 by astronomy).
Maya scholars start the Maya calendar on a Maya date called 4 Ahau 8 Cumku.
Both of these calendric glyphs (Ahau and Cumku) fall at the "end" of
the Maya series of days and months in the Maya system, i.e. at the
beginning of new eras, and we thus expect a Solstice or Equinox at this
point in Maya calendration."
by: http://www.lexiline.com/lexiline/lexi75.htm