calendar?
https://www.aztec-indians.com/aztec-human-sacrifice.html
In a single Aztec calendar year, there are 18 of these “holidays”, one for each month. Here’s a list of some specific requirements for these events:
5 of the 18 require child sacrifices.
11 of the 18 require that the heart be ripped out.
2 of the 18 require someone to wear the flesh of the lucky sacrifice.(eww!!)
4 of the 18 require that the sacrifice be decapitated.
2 of the 18 require that the sacrifice be burned alive.
1 of the 18 requires that the sacrifice be drowned.
1 of the 18 requires that the sacrifice be starved to death.
1 if the 18 requires that the body of the sacrifice be eaten.
The final event, on the last month of the year, requires that everyone fast for five days. No one is sacrificed. Unbelievable, isn’t it?