Question

How did the sumerians make sure that their calendar did not fall behind the seasons

Answer 1

Answer:

Sumerian astronomers tracked movements of the stars, planets and the

Moon. Based on their observations, they invented a calendar which had 12 months and each month had around 30 days. Therefore, altogether, 12 months had 360 days. This was the first concept of  years, months and days.        

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Explanation: SUMERIAN CALENDAR

The days of a month would start and end at sunset. Each day had 12 hours, 6 hours of daylight and 6 hours of night. However, this calendar was not always completely accurate and every 4 years or so, the Sumerians inserted a extra month to the calendar.

Hope this was helpful

Answer 2

Answer:

So not to fall out of sync with the seasons, the Sumerian astronomers introduced an extra month every four years.

Explanation: