Mayan

What the Mayans had managed to discover—2,000 years before computers were able to—is that December 21, 2012, corresponds to the end of Earth’s precession rotation, which is a cycle nearly 26,000 years long.

What the Mayans had managed to discover—2,000 years before computers were able to—is that December 21, 2012, corresponds to the end of Earth’s precession rotation, which is a cycle nearly 26,000 years long.