Time-keeping is for all methods to measure time. For example, questions about the hourglass, the sundial, and atomic clocks all fit into "Time-keeping"

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What is the origin of Indian weekday names?

The days of the week in several Indian languages are named after the same planets/gods as the Graeco-Roman days of the week. Did these arise from some common source predating both (PIE?), or was the ...
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Why did the clocks go back in Shanghai on December 31, 1927?

If you are a Stack Overflow user you may already have read Jon Skeet's excellent answer that discusses a time zone change at the end of 1927 in Shangai, when the clocks went back for 5 minutes and 52 ...
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Why of all units is Time standard?

I'm an American science student, and as such have to constantly fight with the Metric and English unit systems. One thing that a couple other students and I were wondering is why, of all the different ...