Submitted by Slokkkk t3_11dm4k6 in explainlikeimfive
Emyrssentry t1_ja9i0et wrote
Reply to comment by Ohwja in Eli5: How did people know how long a year was in olden times? by Slokkkk
That's patently false. The Egyptians were able to create a 365 day cycle completely independently from any winter/summer cycle. A 360 day year, with 5 extra days added between the years.
speculatrix t1_ja9j42v wrote
AIUI, It offended the Babylonians that there wasn't an exact 360 day year, as they used base 12
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