I am trying to think about this for a moment. Time spent in there adds time to their real life outside of it. So knowing this, wouldn't Goku technically be older than he is stated to be?
When Gohan was born, Goku was about 19 years old. At the start of Dragon Ball Z, he is 24. So we would have to start here.
When Gohan was born, Goku was about 19 years old. At the start of Dragon Ball Z, he is 24. So we would have to start here.