This will happen every 25,800 years. So is a loop and time recount again.
Why Mayan long count calendar stop at 21/12/2012, it is because world become "dis-organize", and things reset again.
Earth will stop spinning on that day and polar shift. So maybe Sun will rises from West not east anymore.
See what scientist said, https://www.youtube.com/v/4Lhs7VR52Bg&hl=en_US&fs=1&"> And see where is Malaysia after Polar Shifted, :? https://www.youtube.com/v/-l0SC3bRLn8&hl=en_US&fs=1&"> So, is that real or fiction?