Why were the Aztec calendar important to Aztecs?

The Aztec calendar was important to the Aztecs as it guided their agricultural, religious, and social activities. It consisted of two interlocking cycles: the 260-day ritual calendar (Tonalpohualli) and the 365-day solar calendar (Xiuhpohualli). This system allowed them to track time, plan planting and harvesting cycles, and schedule ceremonies and festivals that were essential for appeasing their gods. Additionally, the calendar reflected their cosmology and worldview, reinforcing their cultural identity and societal organization.