It was first brought in in Port Arthur, Ontario, 48 degrees north. It sort of works in London, 51 degrees. So around there I guess though I still don't like it much as a Londoner.
I live at 44 degrees and DST during summers does make evenings after work more enjoyable but if the same UTC offset was held through winter, I'd be waking kids to school in pitch dark and the extra afternoon sunlight hour will be during work days anyway.
The reason people like DST nowadays is quite different from the alleged reasons it has been set up. All people I asked claim that it's all about making the best use of their free time (and few think about the problem of dark mornings on the winter and thus many jump to the conclusion that DST should be abolished but by keeping the summer time of course)
Yeah I'm a bit in the all year DST crowd. I'd rather have sun at 4pm than at 8am in the winter as in the morning I'd generally either be snoozing or commuting by something motorized where the dark doesn't matter much.
