DoomsDay!

what is doomsday?
this question is been popular from last decade or so, every time this question arises we will ending up in some kind of vague information, here iam trying to give some useful information that may help you.
ancient literature says that in dec 21 2012 the life on earth will end. the word doomsday popularizing because so many facts and figures in literature says that even if life on earth will not end something strange will happen on doomsdays.
the main facts of believing the doomsday is Mayan calendar so here giving some useful information about Mayan calender.

Mayan Calendar
If you are reading this you are living in one of the most interesting times. From the Mayan perspective and from many other perspectives: These are the End Times. This is the time of prophecy about a 2012 Doomsday. Just about everybody has heard of the date 2012 and read about 2012 doomsday predictions. Most people hear about Dec 21, 2012 and say, “Hmm, isn’t that when the Mayan calendar ends? Isn't that 2012 Doomsday date? Accoding to some scholars the Mayan calendar doesn’t end in 2012. The Mayan calendar is based on cycles within cycles within cycles. What happens in 2012 is the ending of a major cycle. For the Maya 2012 is the ending of what is known as the Great Cycle. The GreatCycle is a 5,125 year cycle that began at the date 13.0.0.0.0 on the Mayan calendar. Modern day media has tagged this date as "2012 Doomsday" The present Kali Yuga cycle of the Hindus began just 11 years later in 3102 B.C., this is supposedly when Lord Krishna disincarnated and then the Kali Yuga began. Kali Yuga is the final and darkest age. For the Maya, history did begin at 3113 B.C. The first dynasty of Egypt was established circa 3100 B.C. The first city in history was founded circa 3100 B.C. That was the city of Uruk, from which the name Iraq is derived. Uruk was founded by seven wise men at the beginning of history in Mesopotamia. If you look at the history books you will see that virtually everything we think of as the history of civilization began at that point and slowly builds up from there—this is the Babylonian/Mesopotamian origin of civilization. Mayans say that this whole cycle of civilization 5,125 years comes to an end on the Winter Solstice December 21, 2012 A.D.