This is a concept that some people don't quite understand. Time can indeed change depending on the observer, but this only occurs in two scenarios:
- Near-light speeds – When moving at such high velocities, time passes more slowly for the individual. This has already been proven by atomic clocks comparing the passage of time on Earth with that experienced by astronauts in space.
- Gravitational time dilation – As seen in Interstellar with the proximity to a black hole, time moves more slowly within its sphere of influence compared to the rest of the universe.
But this doesn't mean that if person X is on the left edge of the universe and person Y is on the right, they'll experience different flows of time. No, they'll both experience the same 24 hours if their relative speeds and gravitational conditions are identical. In the case of
superhumans, it should be the same: equal time in different places.