Is “Now”, for me, mathematically the same as “Now” for people on the other side of the world?

Question

I have only a very vague awareness of the idea of relativity but I’m aware that there’s a concept that people in orbit experience less time than those on the planet due to gravity, in some way.

Does this mean that the idea of “now”, as in a moment that is right now, is marginally different for people in other places? Are they experiencing a moment that is in my objective future/past, in a mathematical sense?

In: Physics

Answer 1

I believe there’s actually no correct answer for this because there’s no definitive, universal point of reference that everyone can use