Mesoamerican 260 Day Calendar. Now, fresh evidence suggests the practice dates back at least 3,000 years. In general, our alignment data, which reflect the attention paid to both the sun's annual motion and other celestial events, including.

Among the fragments of an ancient mesoamerican mural, archaeologists in guatemala have uncovered the earliest unequivocal evidence of a maya sacred calendar. Some days were believed to be tied to good outcomes and good character;