this post was submitted on 22 Feb 2024
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xkcd

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When Pope Gregory XIII briefly shortened the light-year in 1582, it led to navigational chaos and the loss of several Papal starships.

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[–] MBM@lemmings.world 27 points 10 months ago

The boring answer is that in physics a year is just defined as the time it takes for the Earth to orbit the sun, they don't care about calendars and leap years