What is Rav Abadi’s approach to travel across the international dateline (specifically Hawaii) with respect to Shabbat? If one is traveling for work, or if he is traveling for vacation and is staying over shabbat should he keep two days of shabbat like some of the poskim (Friday [keeping d’oraita prohibitions] & Saturday [full shabbat])? To satisfy the positions of both the Chazon Ish and Rav Tukatzinsky?
Or is just keeping the day of Saturday as shabbat enough?
Thank you very much,