Inca calendar

Okay kiddo, so the Inca calendar is like a big circle that helps the Inca people keep track of time. It is divided into 12 months, just like our calendar today. But instead of having 30 or 31 days in each month, each month has either 29 or 30 days. That's because the Inca calendar is based on the phases of the moon, which takes about 29.5 days to go from a full moon to a new moon and back to a full moon again.

Now, the Inca people also have something called an "inti" or a "sun" calendar, which is based on the movement of the sun. This calendar has 365 days, just like ours, and is divided into 18 months of 20 days each, with 5 extra days at the end of the year. These 5 extra days are a time for the Inca people to celebrate and have festivals.

The Inca people are really good at astronomy, which means they study the stars and planets in the sky. They use their knowledge of astronomy to make sure that their calendar is accurate and keeps up with the movements of the sun, moon, and stars.

So, in summary, the Inca calendar is a way for the Inca people to keep track of time using the phases of the moon and the movement of the sun. They use their knowledge of astronomy to make sure their calendar is accurate, and they celebrate the end of the year with festivals during the 5 extra days at the end of the year.