Had to add two bits on the Mayan thing. The Mayan calendar is mostly based off of astronomy, think about it at night no city lights to obstruct the stars. the sky was a different place then. They based the movements and the cycles on events that had happened in the night sky. The current "calendar" ends when the back hole in the center of our galaxy, the Sun and the Earth all come into alignment. This is an actual real thing that will be happening in December and only happens.. oh about every 3,500 years or so. They were probably the first really accurate astronomers, this is when they felt that their Gods would return through the "Navel" of creation and return to the Earth to enlighten man kind and bring in a new age. Yes sounds crazy.. but the astronomy is correct. I think they compared the accuracy of the Mayans time to the Atomic clock and only found something like a difference of .002 with the atomic clock only being accurate to +/- .005 The world will continue to spin and chances are that Mayan Gods will not descend to Earth... But December is only a few months away I guess we'll all find out then. 😮