Figure I'll post a similar technology warning here, I went to the West coast last week and just left my iPhone on NY time, been doing that for 15 years, its just easier to convert mentally and it doesn't mess up my calendar shifting time zones back and forth syncing with Outlook (again years of wasted time fixing things).

Well, both Southwest and Marriott's apps had problems with it in certain regards, not letting me view flight status or book flights for flights that had already "departed" per the clock on my phone. I was stranded about 10 pm PDT the last night and had to book a hotel room but Marriott wouldn't let me since it was already the new day on my phone. Had to book it for the next night and have the FD move it with lots of explanation.

Not the end of the world but it shows these developers don't take everything into consideration.