Well, not actually true. Sunrise and sunset shift the spectrum of the sun toward red because it has to travel through like 20-30km more of troposphere. Add onto that the fact a large portion of the full disk is often obscured by the horizon, and the amount of damaging UV light and total light reaching your eyes is much, much lower than usual.
It's still not advisable to look or stare at the sun, it's still bad. But sunrise and sunset are definitely safer than say, mid-day.
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u/mongoosekiller 1d ago
Is it bad for eyesight?