What was the purpose of the complex calendars developed by the Incas?

The purpose of the complex calendars developed by the Incas was primarily to track time, agricultural cycles, religious observances, and important astronomical events like solstices and equinoxes. These calendars helped the Incas organize their society, plan their agricultural activities, and coordinate religious ceremonies and festivals. They also played a significant role in governing the Inca Empire and maintaining the authority of the ruling elite.