You don't even need timezones or DST to run into issues along these lines. Let's say you have have a repeating 7am alarm on your phone. What should happen if

You don't even need timezones or DST to run into issues along these lines. Let's say you have have a repeating 7am alarm on your phone. What should happen if you want to set it to 8am for one day? I mean, without walking you through a dialog that looks like: do you mean today 8, or tomorrow 8?