this post was submitted on 15 Feb 2024
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Why would metric time still use the same seconds? Surely it'd be a different unit that was a nice multiple of 10
Huh? What are you talking about? What would a second be a multiple of?
You could change the length of a second so a day is 100 kilo seconds for instance.
Much like other imperial measurements the length of a second is arbitrary.
The second is actually the most fundamental unit of the metric system. For example, a metre is defined by how far light travels on some fraction of a second.
https://en.m.wikipedia.org/wiki/Caesium_standard
You can just change that, though, so long as the change is consistent. All units of measurement are human constructs, and definitely aren't immutable.