> A more obvious solution would be to just stop observing DST but that’s not something that will happen unilaterally and will be an especially hard sell at extreme latitudes.
Huh, why would it not happen unilaterally? Different countries already fiddle with their daylight savings times (or absence thereof) unilaterally, and the start of DST is not synchronised across the globe anyway.
So if you have two countries that start DST on different weeks that's already a hassle to deal with, and one of them going off DST altogether doesn't really add any extra hassle in their bilateral dealings.
Huh, why would it not happen unilaterally? Different countries already fiddle with their daylight savings times (or absence thereof) unilaterally, and the start of DST is not synchronised across the globe anyway.
So if you have two countries that start DST on different weeks that's already a hassle to deal with, and one of them going off DST altogether doesn't really add any extra hassle in their bilateral dealings.