Mayan math is based on 20s. 10 fingers and 10 toes equal 20. They use 0s 1s, 5s, the places are 1s, 20s, 400s, Here is a picture of 2015 in Mayan. It’s a pretty amazing system. There are 18 months each with 20 days and the 19th month has 5 days. Still 365 days in a year. The Mayan calendar cycle ended in 2012 with no provisions to start over. All the structures in Copan Ruins are aligned with the sun. The Sun God is the most powerful in the afterlife.