the closer you are to the equator, the less DST makes a difference. further north if anything you'd want permanent winter time. there (i.e. here, de_BY) DST gets you 1h more light in the afternoon evening when there is plenty of daylight available, i.e. March-Oct.
and then you have the east west axis and itnernation collaboration and itnernational teams. which is why europe has a single CE(S)t from spain to poland and everything in-between, except for the apostates on the island.
https://www.timeanddate.com/sun/cuba/havana
https://www.timeanddate.com/sun/germany/nuremberg
https://www.timeanddate.com/sun/finland/oulu
and then you have the east west axis and itnernation collaboration and itnernational teams. which is why europe has a single CE(S)t from spain to poland and everything in-between, except for the apostates on the island.