Around 5,000 years ago, the Sumerians of ancient Mesopotamia revolutionized timekeeping.

Around 5,000 years ago, the Sumerians of ancient Mesopotamia revolutionized timekeeping.

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They created the Sєxagesimal system, dividing an hour into 60 minutes and a minute into 60 seconds.

Their 12-month lunar calendar was driven by agricultural and religious needs.

This system of 24 hours, 60 minutes, and 60 seconds remains a monumental achievement.

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