Despite the mysticism that often clouds the Mayan calendar in popular culture, fact remains that the calendar system in use by the Mayans was based on a system used throughout the pre-Columbian ...

The Mayan calendar’s 819-day cycle has confounded scholars for decades ... Mercury was always the starting point for the tricky timeline because its synodic period—117 days—matches nicely into 819.

The Mayan calendar’s 819-day cycle has confounded ... Mercury was always the starting point for the tricky timeline because its synodic period—117 days—matches nicely into 819.

Despite the mysticism that often clouds the Mayan calendar in popular culture, fact remains that the calendar system in use by the Mayans was based on a system used throughout the pre-Columbian ...