Just picking random cities for comparison, though, Mexico City has more than 2h/day more daylight than Montreal in the darkest part of the year. Not only is the total daylight short but for most people working normal hours, it also means for three months of the year that it’s already pitch black out when you get off work. It also tends to be cloudy in the winter, so even when it’s “daylight” it isn’t unusual to go a whole week without actually seeing the sun.

I finally broke down and bought a full spectrum lamp that I sit in the bask of during winter mornings. It helps a bit loo