All the patches are in PST always and do not switch over PDT, I know its not easy but for those in GMT its at least easy to remember -8. For other people it would require them looking up there time and comparing it to PST. For me its even easier I live in PST/DT.

But for those who live in areas that aren't easy to calculate, they should have some sort of region thing, "you picked this country, oh heres the time where you are", its easy enough to check, it just gets tricky when you have people who live in Mexico or Canada, or other Europeans countries that aren't outside of the 3 covered by the game.