Over the past decade, the Mayan calendar has been subjected to close examination and intense debate. Could an ancient calendar system predict solar flares? This fascinating theory will be delved into, ...

The calendar, rooted on observations of the movements of the sun, moon and planets, was based on a ritual cycle of 260 named days. The 260-day calendar, called the tzolk’in, was one of several ...

A glyph representing a day called “7 Deer” on mural fragments dating from the third century BC found inside the ruins of a pyramid in Guatemala marks the earliest-known use of the Maya calendar, one ...