Don't Know if you need this, but Time Zone travel is impossible, since it you go around the earth at a fast speed it looks like you always change the time of day when in fact it's calculated by your angle to the sun based on earth's rotation, you can however Time Travel if you're in space, because of a bunch of crazy time-space relativity laws by Einstein, though it's only by 1 millisecond, we can just put a ship in deep space and make it come back to a time where shorter time has passed on earth but a longer amount of time has been experienced by those aboard the ship.
No I'm not a scientist I just study physics in my school