Question

who invented the calender ?​

Answer 1

Answer:

The Sumerians in Mesopotamia made the very first calendar, which divided a year into 12 lunar months, each consisting of 29 or 30 days.

Explanation:

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Answer 2

Answer:

In 1582, when Pope Gregory XIII introduced his Gregorian calendar, Europe adhered to the Julian calendar, first implemented by Julius Caesar in 46 B.C. Since the Roman emperor's system miscalculated the length of the solar year by 11 minutes, the calendar had since fallen out of sync with the seasons.

Explanation: