@Big deal, you might say. Still, there's a couple of very interesting (and disturbing) facts about the Maya calendar's end. Most intriguing, 21-12-2012 is not a day like any other. Up in the sky, an extraordinary and incredibly rare event will take place. The Sun will move to a unique spot in the sky -- and hold still for a while, since it is solstice day. The Sun will sit precisely on the heavenly crossroads between the Milky Way and the galactic equinox, forming a perfect alignment with the center of the galaxy.
You can say a lot about the Maya, but you've got to hand it to them: they knew a hell of a lot about stars. For instance, they calculated the exact duration of a year to a thousandth of a decimal point, much more precise than any Greek or enlightened philosopher ever did. Also, they were able to predict every solar and lunar eclipse until this day. And obviously, they knew where the galactic equinox and the exact middle of the Milky Way lay: they called this crossing `the Sacred Tree'.
If they had the knowledge to make the other calculations, they may be right about the prophecy also. What do you think?
Taken off that great fountain of wisdom, the internet.