Hmmm, it's interesting to see how that problem can occur in an industry that runs on UTC.
Aggravated, I suppose, by the fact that the UK moved the clocks on Sunday 26th March and the parts of the USA that moves clocks at all does theirs on April 2nd. (Some parts of the USA don't bother to move - some parts do. Try keeping up with that in local time).
I guess it's only a mental thing that makes all the World want to have it's own days starting in local time. Would it not be easier if the whole World kept UTC (for example). It shouldn't be a problem starting my day here in Florida at 12:00 and finishing at 03:00 - just takes practice.