Changing clocks only makes sense (to the little it does) in middle latitudes when there is a decent amount of both light and dark in a day in the worse case, as you can shift things around to use the light better (maybe). When there are only a couple hours of light/dark in the day it doesn't mater what the clocks do, you can't really do anything different.
See my other post in this discussion. Higher latitudes are dominated by the tilt of the earth https://www.timeanddate.com/sun/usa/seattle DST only harms them by making the latest summer sunset around 10PM.