At around 2,300 years old, the painted plaster is the oldest known use of the calendar system once used by cultures across Mesoamerica, including the Aztec and the Maya—and still used by many ...

The Aztec year now beginning is called Ce Calli, which means One House, according to a system of cyclical symbols. The Aztec calendar has four subdivisions: rabbit, reed, flint and house, and every ...

That’s a number with a special significance on the Aztec calendar, symbolizing the New Fire ceremony — which was an Aztec ceremony performed once every 52 years to fend off the end of the world.