• Ech@lemm.ee
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    3 months ago

    I mean, technically, a day passing doesn’t explicitly need the sun as it is a measure of the rotational speed of the Earth (ie time), not the position of the sun in the sky. The latter was/is simply used to measure the former.

    • Psychodelic@lemmy.world
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      3 months ago

      That’s not really a fair/honest argument when the concept of a day existed long before humans knew the earth was rotating. Originally, a day was defined as the rising and setting of the sun

      • Ech@lemm.ee
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        3 months ago

        I’m not really arguing anything, just pointing it out.

      • dohpaz42@lemmy.world
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        3 months ago

        To humans, before we discovered the concept of rotations around the sun, you are correct. But for an advanced being/race that had the power to create universes… I’m sure they understood far greater concepts than the rising and setting of the an orange fireball in the sky. 😊

    • astrsk@kbin.run
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      3 months ago

      Without a reference frame, there would be no way to tell when one rotation had been completed.