Mayans Used symballs To Represent Their Times or Calender.
The Mayans Believe That December 21,2012 Will Be The End/Or New Begining
The Maya were a powerful central American nation right up until about the year 1600 and there are still something like 7 million of them. Their astronomer - priests found that they could predict the cycle of the seasons, the appearances of Venus as a morning or evening star and even eclipses by counting days. Several other civilisations have done the same in ancient times. This does not mean they could predict anything like the end of the world or whether little "Johnny" would grow up to be a farmer, a soldier or anything else. They might have tried stuff like that, but it has never worked for anyone except by sheer chance.
One result was that they counted days. They did not count days in tens and hundreds, they counted in 20s and 18s. Then from there on in 20s. That gave them a unit of 360 days which was close enough to a year. They knew the year was 365 days and probably about 365.24 . . . .days as well, but that was not important to the day count
Twenty times twenty times 360 days was called a bak'tun, it's a bit short of 400 years obviously. They also believed that 13 was a lucky number. Now, as far as we can tell, the old Maya believed that the world was created about 11 August 3114BC (by our count) and if you add 13 bak'tuns to that you get 21 December 2012 which is the solstice. This is an estimate made by modern scholars, it may not be correct but leap years have nothing to do with it.
The Mayans Believed In Many Gods.They Did Many Sacrifices To Their Gods Cause They Belived That They Will Bring Them Protection Or Luck