I went from the pacific region to the central region. My phone changed time zones, do not disturb didn't. So I was getting calls after I didn't want them and didn't get a wake up call as do not disturb smothered it.
Shouldn't this feature move with the time zone?
iPhone SE, iOS 12
I have traveled a great deal in the last few months, between Chicago and Washington, DC. I've never seen DND change time zones. I have mine set to schedule from 10:30-7:00, and it activates and deactivates based on those times in the local time zone.
My experience was that it switched on and off according to my PST settings, so when I was in San Antonio, the do not disturb thing activated at 11:00 PM and turned off at 8:00 AM instead of my usual 9:00PM to 6:00AM times.
Not sure exactly what you mean. If you have DND scheduled from, for example, 10PM till 7 AM, it should switch on at 10PM in whatever time zone you happen to be in. If you go from Pacific to Central, which is 2 hours different, that means it should activate at 10PM Central... It's been a while since I travelled to another time zone, though I do have a trip coming up in about a week where I'll be going from EDT to CDT. I'll have to pay attention to it while I'm there.
This wasn't my experience.
While I'm not sure if this will help, if you go to Settings>Calendar>Time Zone Override, do you have that turned on? I don't think that should have anything to do with it, but I have mine off. I wouldn't know why DND would base itself on your location when you set the time, since it should activate itself based on the time that is listed in the Setting, not the translation of that time to a different time zone. At this point I know that it would be very difficult to troubleshoot, but did you try any troubleshooting while you were there? Was the phone displaying the correct time?
Do Not Disturb when changing time zones
