[Asooka]

Circadian rhythms are fixed to the sun, not to the number on a dial. For a concrete example on how permanent DST will mess up people, look at Spain. The entire country should be on GMT+0, instead it's on GMT+1 because of Hitler not wanting separate timezones across the Reich. Spain has a reputation for getting up late, having lunch late, etc. The truth is, the Spanish people do all these things at the usual time, but their clocks are one hour fast. I doubt America will be pragmatic enough to just shift everything one hour forward, so you'll end up torturing school children to rise early to appease some desire for the clock to be showing 6 when you wake up. I certainly don't want office hours to start at 8 all year round. For another example - Russia tried permanent DST but after a year changed to permanent astronomical time because of such problems. DST is tolerable in summer, but awful in winter.

Still, maybe if that's the only way to kill switching clocks twice a year, it might be worth it and we could end up with later hours like Spain.

[cgriswald]

For me, winter without DST meant going to school in the dark and coming home in the dark. That certainly didn’t help my circadian rhythms...