why is "midnight" so much closer to evening than morning? why am I often "still up at midnight", and rarely "already up at midnight"?
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other people have already said this but it's artificial lighting. midnight is the opposite of noon, so roughly halfway between sunset and sunrise. the worse your circadian rhythm is aligned with sunrise and sunset the weirder midnight's positioning is
Maybe more to the point: we tend to turn artificial lights on *when we're already awake*, not wake up to turn lights on. This helps explain the asymmetry of the misalignment.
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