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A comment on U.S. Bill H.R.69 introduced – To make daylight savings time permanent. Parent comment

Re:U.S. Bill H.R.69 introduced – To make daylight savings ti... by martincmartin on Tuesday January 05, 2021 @12:33PM (#25648112)
> what our bodies consider "early" is dependent on when the sun rises, and not the numbers we put on our clocks.

It's more of when we turn on the lights in the house. The lightbulb has messed with our sleep cycle for a long time, e.g. causing people to stay up later than they did in the days of kerosene lamps.

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Re:U.S. Bill H.R.69 introduced – To make daylight savings ti... by Wowfunhappy on Tuesday January 05, 2021 @03:06PM (#25650317)
See: https://justgetflux.com/research.html

Artificial lights certainly mess with our clocks, but not to the same extent as the sun, because they have different wavelengths.

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