The Aztec calendar Wheel and the philosophy of time are related to the Aztec Calendar.

The Mexica calendar is used by the Aztecs and other Pre-Columbian peoples of central Mexico.The basic structure of calendars from throughout ancient Mesoamerica can be found here.

The Aztec sun stone is on display at the National Museum of Anthropology in Mexico City.A 260-day ritual cycle called tnalphualli is included in the calendar.The 50-year "century" is formed by the two cycles together.The tnalphualli is considered to be the sacred calendar since it is based on the sun.

Each day is marked by a combination of a number from 1 to 13 and one of the twenty day signs.The number and day sign would be incremented with each new day, with 1 Crocodile followed by 2 Wind, 3 House, 4 Lizard, and so forth up to 13 Reed, after which the cycle of numbers would restart.The cycle of number and day signs would continue until the 20th week, which would start on 1 Rabbit and end on 13 Flower.It would take a full 260 days for the two cycles of twenty day signs and thirteen numbers to repeat the sequence back on 1 Crocodile.

The set of day signs used in central Mexico is similar to those used by other countries in the region.Each sign has an association with one of the four directions.It was [1][2].

There are different ways in which the day signs were drawn or carved.They were taken from the Codex Magliabechiano.

The current world and the worlds before it were shown on the stone.Each sun had its own species of inhabitants.Like all of the suns before them, the Aztecs would eventually die due to their own flaws.The gods could destroy the world at the end of any given life cycle, so every 52 years was marked out.

There were twenty periods of 13 days each for the 260 days of the sacred calendar.The Spanish term docena "dozen" is derived from doce "twelve", which is why scholars refer to these thirteen-day "weeks" as trecenas.The original Nahuatl term is not known.

Each trecena is named on the first day of the 13 day period.Each of the twenty trecenas had its own deity.