I happen to also think we'd be, in some ways, more content and happier (and likely healthier) if we followed seasonal rhythms a bit more, including being much less active & productive in the Winter when there's the least sunlight. But that part, I am entirely aware, is completely impractical.
That means dark from before 17:00 to 8:00 and that is just too much. I can barely fit work into that.