The Maya had a better solar year determination (tracking of the
winter solstice) than the Europeans did in 1582AD before 900AD,
how did they do this? This planetarium program will be
about the mathematical accomplishments (zero has only been
invented twice by humans) and the extremely sophisticated
astronomical observations and calenderical calculations of the
Mayans. Images of the abandoned city of Tikal, Peten,
Guatemala and some stone stela from Tikal and else where will be
Mayan, base 20, Vigesimal Numbering System, for numbers not day
Same number for day dates, mostly base 20, but one register, the
third from the lowest, is base 18.
file used for part of 9-20-2017 planetarium show available
Resources I am using and have used to develop this program.
College's Planetarium home page
Web page by Dr. Harold Alden Williams.