https://en.m.wikipedia.org/wiki/Stonehenge
Potentially 5000 years ago or so, Stonehenge is aligned to the summer and winter solstice and speculated to align with lunar cycles as well.
This makes sense for preparing for planting, growing, harvesting and the return of spring.
Sun dials have been used for more accurate daily time keeping. Candles were made to burn consistently so that they could be segmented and give an idea of time passage.
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