Originally Posted by
papaslides Still doesn't change the fact that my clock needs to match the ship, and that doesn't always line up with when the gps reaches a new time zone. Sorry if I sound rude but GPS is NOT, nor ever will be a valid solution for my particular and very specific question.
Welcome to the forums. I think changing the system date & time is not that easy. Probably it could be changed with an app like Tasker on a rooted device, but too complicated I'd say.
You can create a widget with apps like Zooper or KWGT (paid versions) and set some rules to change the time displayed, but only on the widget without changing the system date & time.
Another possibly could be creating a shortcut to the data & time settings so it would save you a couple of taps and swipes to get in there and manually change the time zone. Apps like Nova launcher or More Shortcuts could help you to do that.