This is a holiday that we, as humans, have been celebrating for a long time — even the Maya. Two parts of the Mayan Calendar — the Haab and the Tzolk’in — each start over in a new cycle ...

Characteristic of this system is the cyclical nature, with the Mayan calendar featuring three common cycles: the Long Count, Tzolk’in (260-day) and the 365-day, solar-based Haab’. Combined ...

While ancient Mayan culture offered various calendar types, the one that baffled scholars the most was this 819-day calendar discovered in glyphic texts. Researchers have long believed this ...