If I turn, say, 18 at home, and immediately travel westwards into a different time zone where it's still the previous day, will I be legally 17 or 18 there?
And if 17, how would that affect e.g. any rules that would require me to be of age for that specific journey (can't think of any specifics, and yes this is getting rather academical now).
This question is about the legal aspects, not the practical side of how to actually do it.