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dec 8, 19986 BC - Ancient Sumerians created the sundial.

Description:

This used 12 hours per rotation, just like our clocks today. They used 12 hours because it fit nicely into 360 degrees. Also, dividing it down fit evenly into it.

Added to timeline:

clocks

ByLogan Nelson
14 Sep 2017
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0
744

Date:

dec 8, 19986 BC
Now
~ 22028 years ago

Images:

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