Einstein’s Special Theory was shown up to be utter nonsense by Clauser and Freedman in 1972. Since then, all contributions in theoretical physics that ignore this problem (they all have done) are basically nothing more than deranged nonsense. The answers are easy, but not for people who do not want to understand the simple subject of quantum relativity and still think that light photons (light quanta) are tiny lumps of any real substance flying through free-space at 300,000 km/second. The quanta-delay is systematically the equivalent of 300,000 km/second (in high vacuum) but the action jump is instant. The speed of light seems to be infinity after a systematic delay. The value of the systematic delay is the reciprocal of i (c = 1/i), but the reciprocal of of i is minus i, and (minus i)^2 = -1; in other words, c^2 = -1. The classical interpretation of time inverts into imaginary seconds (i-seconds) of historic depth.
Newton deliberately put time back to front and even mentioned in his musings that he had deliberately done that, but nobody ever paid Newton any real attention. Nobody ever even bothered to attend any of Newton's lectures, that would have been like trying to understand an address given in Apache code-talk because nobody could possibly understand the new Newtonian vocabulary in high Latin. In fact by 1700, Newton was possibly the only scientific applied-mathematician with any strong fluency left in Latin at all. That situation must have persisted until at least 1831 because Gauss was all over this issue like a rash, so the Latin language of Gauss was also ignored for the very simple reason that nobody could understand it.