Civil Calendar: Xiuhpohualli
The Aztec calendar was made on the basis of the solar year, which was used to mark the important ceremonies and rituals for the Aztecs. These rituals and ceremonies were mostly related to farming and agriculture. According to the Aztec calendar, the year is divided into 18 months and each month has 20 days. There are four weeks, each having five days. This made the year of 365 days in addition to the five empty days, which are known as "nemontemi".
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