I’m sure I haven’t asked the question correctly, but if all the clocks in the world are aligned, when did we start it? How did the entire world agree that midnight is midnight and any second behind or ahead is out of line?
In: 10
Locally, a long time. More broadly, the British decided that since they went to all that trouble to lay rails and build trains to get from place to place, it would be useful if folks on either end could tell when the train would show up (or leave). That meant the times had to be synchronized, so they chose Greenwich Mean Time as the “standard” for the country.
Eventually, this spread to most other countries, again pushed mostly by train schedules.
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