By Tovar, Juan de, circa 1546-circa 1626 – http://dl.wdl.org/6732.pngGallery: http://www.wdl.org/en/item/6732/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=83493023 Scholars show how multiple planet movements tie into the 819-day Mayan calendar.
The 819 days of the calendar must be viewed across a 45-year time period to fully understand.
The movements of all major planets visible to the ancient Mayans fit into this extended calendar.
How the Mayan Calendar Works: Scientists Finally Cracked the Code