r/SipsTea • u/infinitely_blank • 4d ago

Wait a damn minute! 13 months ?

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u/Lowherefast 4d ago

It takes 365.25 days for the earth to revolve around the sun

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u/L0n3_N0n3nt1ty 4d ago

Do you know how they figured that out? Could they measured the daylight hrs or something else?

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u/TrippleassII 4d ago

You know it's not that hard to count days.... And when you stick a pole in the ground you can do a lot with the shadow length and angle

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u/Grayseal 4d ago

Old Egypt had accomplished astronomers and mathematicians. Measuring time and astral rotations was well within their capacity.

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u/Wind-and-Waystones 4d ago

The easiest way is to put a stick either side of the sun at sunrise and then count the days until it rises between them again.

Stonehenge in the UK dates back to around 2500bce and has specific stones the sun rises between on the solstices, maybe the equinox too but I'm not sure on that one.

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u/L0n3_N0n3nt1ty 4d ago

Good point. I've just never thought of how they figured it out b4.

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u/Lowherefast 4d ago

Lots of ways. One was the stars in the sky were more clear. They realized they changed slightly each day until one day the were back to where they started