The calendar was religious and each month had its own festival.

The Inca worshipped the dead, ancestors, founding culture heroes, their king whom they regarded as divine, nature and its cycles. The worship of nature and its cycles suggest that for them time and space were sacred, and consequently the calendar was religious and each month had its own festival. The most important cult was directed to Inti the god sun who nourished the earth and man with his rays. The most important feast was the one dedicated to Inti, called IntipRaimi. This rich ceremony, with its splendid costumes, and gold and silver offerings and decoration, was opened by the Inca emperor, his family and the curaca. After the opening the emperor made a libation to the sun and drank chicha (a maize drink) with his family, then led a procession, followed by every one into the sun temple, where the imperial family made offerings of precious vessels or images to the god. Following this, omens were read and llamas were sacrificed. The ceremony ended with eating and drinking.