Lets say we have triplets on earth A B and C. B and C goes from earth together in the same direction at some relativistic speed lets say lorentz factor one milion. Now after one year passes from the point of A, brother B decides to stop. Now after one more year from the point of A passes brother C stops too. Then both B and C sets course to meet each other at midway at some nonrelativistic slow speed. the question is: When B and C meets which one of them is older? if your answer is "B is older than C" then please explain why, because from viewpoint of C the B was one who was accelerating away from him. So im thinking this solution is violating the postulate about physical laws being same independently of uniform motion (that violation being someone accelerating away from you is actually aging faster than you). if your answer is "C is older than B" then please explain how is this possible from viewpoint of A. From my understanding of the formulas the longer distance you go in relativistic speed the more time you avoid (from the viewpoint of A). So im thinking this solution is violating the same postulate. Thanks for answers.