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A comment on The world nearly adopted a calendar with 13 months of 28 days. Parent comment

Re:The world nearly adopted a calendar with 13 months of 28 ... by clort on Sunday November 05, 2023 @04:15AM (#38149528)
The moon cycle is approx 28 days, which is 7x4.

The height of tides are rooted in this but have 7 day periods of increasing, decreasing, increasing, decreasing.

I don't know if thats reason enough to continue with it, but possibly part of the history

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Re:The world nearly adopted a calendar with 13 months of 28 ... by stvltvs on Sunday November 05, 2023 @08:06AM (#38150804)
This is a pretty common approximation, but the average lunation is closer to 29.5 days.
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