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Cake day: June 19th, 2023

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  • Match!!to196@lemmy.blahaj.zoneStay rule
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    2 days ago

    Proper time is only defined along a timelike world line, e.g. the timeline of a specific reference point / object. It’s “objective” in the sense that is true for the reference point, but other reference points may (for example) perceive distant events in a different order