Firstly I'd like to point out if you Google "Samoa" and "Shabbat" you would find many articles from 2011 that were referring to a time where Samoa changed the day of Saturday, it happened only once and my question is not about that, but about something else, let me explain briefly:
Let's say you want to take a flight from Pago Pago International Airport (in American Samoa) at 5pm on Friday to Fagali'i Airport which is 30 minutes away by flight, but the time in Fagali'i Airport (Upolu) is 5pm SATURDAY ...
Let's say Shabbat starts at 5pm and you exhaust those "18 minutes" after 5pm (not talking Lechatchila but Bediavad) ... so the plane takes off at 5:10pm (ish) and then you land around 5:45pm in Upolu on Saturday (and Shabbat is out at 6:00pm but there are already 3 stars 15 minutes before then)...
Is this possibly somehow allowed? Has anyone ever evaluated this case Halachically? I'm not talking about long flights from LA (Friday) to Australia (Saturday) - this is a 30-minute flight and the time difference between American Samoa and "New Zealand" Samoa is 24 hours!
What do you think about a case like this?
We assume the day of Shabbat follows the convention of the international date line, so can you skip on Shabbat in a very short time? Just half an hour takes you from Friday in one place to Saturday in another?!
What if you are a traveler doing the opposite, going on Motzahey Shabbat in "New Zealand" Samoa to American Samoa? Are you going back in time by 24 hours? Can you do that or that's not allowed?
Has anyone ever looked into the case of "jumping" between time zone from one place to another in a very short time? (Soon B"H we might have plans that will do the same between Israel and New York!)