I’ll do you one better. Sun rises at 6:30am for all time zones. Vast majority of clocks are digital now and can simply autocorrect at 3am each time zone.

This is the rarely-expressed exact opposite of DST abolition: literally do micro-DST every single day to keep local time adjusted to sunrise (though I would just do sunrise = 0:00). I actually... kinda respect it?

Some precedent in ancient chinese timekeeping:

But if we begin with sunrise at 0:00, where there is no sunrise, for the sun is up all night (above the polar circle), or, in the winter, never rises, there would be no time at all 🤯