Why Does The Mayan Calendar End In 2025 Dates. Some scholars believed that the missing dates in the long count calendar might be due to drought and climactic changes, which lead to a drastic drop in. The mayans used three calendars.

But don’t credit the ancient maya calendar for predicting it, say experts on the mesoamerican culture. 365 days, but the 5 extra days were considered unlucky by the mayans, so there are only 360 days that are counted.