The Aztec zodiac signs are determined by the Tonalpohualli, a sacred calendar consisting of 260 days. Each day is associated with a glyph and number , which influence a person’s personality and ...

In fact, until recently, scholars had yet to even decipher why the Aztec New Year began when it did — Feb. 23 on the Gregorian calendar, which is used today by Western cultures. “That was a conundrum ...

The Aztec Calendar, known as Stone of the Sun Credit: De Agostini Editorial The stone was originally positioned facing upwards at an unknown location in the city and was painted in bright colours.

“This long stone causeway aligns with the sun exactly on Feb. 23, or Feb. 24, with a little variation from one year to the next, which is exactly the time in which the Aztec calendar started ...

The layout reflected the tonalpohualli, a 260-day Mesoamerican calendar divided into 13-day periods. Aztec cosmology held that 13 heavens were arranged in layers above the Earth.