You can visit tomorrow and come back to today in just a few minutes.
No spaceship is necessary, and your body will not disintegrate. You don't need to be trained by NASA, and you will not get 30 years older while you are time traveling; it's a lot easier than that.
Just visit the Bering Strait, and spend some time in Big Diomede island. You'll probably eat some good quality fish over there, Inuit people know where to fish. The total population of Big Diomede is less than 150 people, so you will get a warm welcome on your arrival.
Once you are recovered from the long journey, you can arrive at the Bering Strait on a helicopter from Alaska or from East Russia, simply walk to Little Diomede island, if waters are frozen. If not, you'll need a boat, but everyone has one there, don't worry.
The distance between Big Diomede and Little Diomede is just 2,2 Miles (3,5 Km), but as they are separated by the International Date Line, the hour difference between both islands is 21 hours.
They call it "Tomorrow Island" and "Yesterday Isle ".
If you die in Big Diomede and you are carried to Little Diomede, you'll have 21 hours to find out the cause of your death, find a cure, and return to Little Diomede snapping your fingers and whistling, like nothing happened.
Forget about the Delorean Doc; Time Traveling is possible.
