This is why I prefer, and try to use, "<time> <fine-location> time". Like: "Friday 6:30PM Vancouver time" and a world-clock to keep track of when that is. The w

This is why I prefer, and try to use, "<time> <fine-location> time". Like: "Friday 6:30PM Vancouver time" and a world-clock to keep track of when that is. The website time.is is very useful for this. This takes a bit more effort, but it is less ambiguous and saves you from having to deal with the insanity that is time. DST switching will still cause issues but, as long as you're not the one cursed to implement that software, it should be fine with advance warning.