Turn it off and back on it should update the time based on where you are. It takes a few seconds once it comes back on.
I got to that point. The only thing I could not was select it 12 or 24 hours display and format for the date. I could not reset the time, month or year.
Open Settings > Phone settings > Date and time.
You should be able to correct your time there.
Try it and let us know how it goes.