If a hobbyist had a scheduled 2 hour appointment with an ATF at 1AM  this morning, and Daylight savings time ends at 2 am, would you leave at 2 or 3? Good haggling issue? Or in the spring, if you started at 1, would you go till 3 or 4?

You ask a provider to join the mile high club and you fly over different time zones. Do you always fly west?

If a Hobbyist books a 1 hour appointment this morning at 9:00 AM and the provider forgot to change her clock back, is the appointment already over when he gets there?

That being said ... I would opt for the mile high club going east hehe

If you have the clock traveling at a significant fraction of light speed during the session, only an hour or so will pass on it but days or weeks or even longer will pass the two of you!  Yes, it's geek humor.

of course.