How do you time travel for real?
Sadly you don't because of a paradox showing that its not real. But if we can then this universe is a non-paradox universe which is highly doubtful. See if any of us could time travel and change something. It would already have happened and we would know because the whole fabric of time would be rewritten
We know of no way yet, and even if in the future some smart kid develops a system for time travel, then it is likely to produce some real problems. These problems concern anomalies that would cause problems, and it is likely that if time travel had been discovered, then some future time travellers have travelled back in time and erased the invention. So NO.
A time machine has never been invented, it has always been an theory. Scientists say that if you open a wormhole then you can create a hole in space-time which enables to travel in time. Some say a wormhole can't be open, so time-travel is impossible. Some say that if you manage to travel at 99% the speed of light, the time will slow down. Means in the the transport in which you are travelling…
Time travel and time machines are things of science fiction at the moment. Theoretical scientists have identified ways to move through time but this is still a long way from a practical application. Science has a habit of proving people wrong when they say something can never be done. It would be a brave or foolish person who says that time travel will never be possible.
If you travel from the eastern time zone to the central time zone you need to adjust your watch what do you need to do to it?
In this century, the only real way to travel transcontinental is by booking a cruise ship. These days, the only real travel by boat is shipping cargo from one country to the other. You can book cruises that leave Florida and land in England, but stops at many country's coasts before you arrive, so you have to factor that time in your trip.