Scientists Finally Solved the Mystery of How the Mayan Calendar Works

The Mayan calendar’s 819-day cycle has confounded scholars for decades, but new research shows how it matches up to planetary cycles over a 45-year span. That’s a much broader view of the tricky calendar than anyone previously tried to take.
In a study published in the journal Ancient Mesoamerica, two Tulane University scholars highlighted how researchers never could quite explain the 819-day count calendar until they broadened their view.
Scientists Finally Solved the Mystery of How the Mayan Calendar Works