Mayan Calendar 2025 Doomsday. Some people are worried it will, based on an ancient mayan calendar that comes to an end on that date. Calculations on the walls refer to dates after december 21, 2012—which has been erroneously called the maya doomsday—as well as the first known maya.

A particular day, month, and year can be expressed as a long count date using baktun, katun, tun, uinal, and k’in units of time together with a haab and a tzolk’in calendar. That’s because the mayan apocalypse is an entirely grassroots doomsday, religion.