The Calendar Developed By The Sumerians Was Based On

The Calendar Developed By The Sumerians Was Based On. The ancient sumerian calendar divided a year into 12 lunar months of 29 or 30 days. In sumerian culture, the year was divided into 12 months based on the lunar cycle.

The calendar developed by the sumerians was based on a lunar system. The sumerian calendar and the sumerian system of irrigation were both connected by one thing;