Canada

I'm partly with you. The sleep research is pretty clear, from my understanding, that, in winter, daylight time is worse for sleep and mental health than standard time.

But the research is also pretty clear that changing time zones is even worse, afaik.

So, according to the science on sleep and mental health, the ranking of the options is:

1. Permanent Standard Time
2. Permanent Daylight Time
3. Changing to/from Daylight Time

But, on the other hand, there are also arguments for the social and economic benefits of having light to "do things" after work. I'm more inclined to think the sleep and mental health benefits of morning sunlight for resetting our collective circadian rhythms is more important, but I also accept that others disagree.

Regardless, this is better for almost everyone. Some businesses, airlines especially, will face some complications, but it won't be a big deal in the long run. Saskatchewan has been like this forever. It'll be fine.