Why are there 360 degrees in a circle

There are 360 degrees in a circle because when in 3000 BC, the Sumerians invented writing. They also had a calendar, dating from 2400 BC, that divided the year into 12 months of 30 days each, that is, 360 days. These people saw sun, moon and other planets moving n a circular motion. instead of understanding why these are moving they just divided circle to 360 parts;one for each day. That's why there are 360 degrees in a circle