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Is there EVIDENCE (proof) that time dilation actually occurs in the case of relative UNIFORM mottion (i.e., where no acceleration or decelleration occurs)? By proof, I don't mean mathematically but, instead, in observerable reality. No one answered this simple question. I raise this because to say in such a case that, from BOTH reference frames, the "moving" cliock is ticking slower than the "stationary" clock is a LOGICAL CONTRADICTION . Even invoking relativity of simultaneity where one clock begins ahead of the other, the period of supposed dilation is overlapped by both frames.