Er yes, that's not too brilliant! I have to keep on my toes because I've got an hour's difference with k.o. time in U.K., and sometimes without you even asking them to your bloody devices like mobiles, iPads and suchlike adjust without effing telling you.
What amazed me was that a few years back I flew over for a conference in Ontario. When we got to the coast of Newfoundland, I thought, "Oh that's it, in Canada, flight over, we're nearly at Pearson Airport." I think it was something like three full hours on to Toronto. Canada is a Ridiculously Big Country. They should shrink it or something.