The mayan calendar ends at 2012.
There have been a few short term eclipse, which alarmed the world about this natural phenomenon.
In Hindu mythology, the two demons Rahu and Ketu are said to "swallow" the sun during eclipses, snuffing out its life-giving light.
In Islam eclipses are one of the signs of apocalypse.
So there are possibilities that doomsday will arrive 4 years from now.