Not quite sure how you define "now". If you mean actual clock synchronization, then two persons in the same inertial time frame are experiencing the same "now", in the sense of clock synchronization. Their clocks are totally in synch, not only speed, but timewise. Of course, physically, due to the speed of light what their eyes see will be out of synch depending on the distance between them. Knowing this allows them to calculate the perception time lag.

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