Of course, in some parts of the world, Alaska or the Arctic Circle, I think, certain times of the year, you have to keep a sharp eye to spot any daylight. It's a depression that comes from too much darkness. Of course, it happens mostly in the winter. You would have fatigue, sleep disturbance, a strong desire for carbohydrates, potatoes, bread, that kind of thing and social withdrawal. I have that all year round.
Light therapy is recommended, so some people use artificial light boxes.
Treatment runs up to six hours a day. But I guess that's the point. If I've got this right, it's the Earth's position on its axis that determines the number of hours of light in a day, and man certainly can' t change that. So I'm not trying to mess around with the Earth or its axis, for that matter. I'm just saying it's been pretty dark out there for a long time, and personally I'm thrilled daylight-saving is finally back.