There was quite interesting discussion which was partially about time dilation in rotating non inertial system: http://www.sciforums.com/threads/time-dilation-gravity-force-vs-gravitational-potential.156181/ I was believing, that due to Equivalence principle the linear acceleration and also non inertial fictitious force do cause time dilation, but well educated members of this forum teached me, that there is practically no time dilation due to GR in rotating non inertial system, only dilation caused by speed which can be calculated with SR. Actually Im no professional physicist, so I do need not take mainstream interpretation of GR like god given script to avoid professional suicide and I like to see what experiments say on that matter. So I checked experiments and the outcome was quite interesting: There was experiment with muons, which seems to confirm that there is no time dilation due to centrifugal force, but only due to speed of particles: http://www.nature.com/nature/journal/v268/n5618/abs/268301a0.html Unfortunately, I couldnt find any free full text version of the paper I really do mistrust short intepretations of papers in popular texts. Also there is second experiment confirming it, so called Mossbauer rotor experiment. What is interesting, recently was this experiment repeated and they found a significant discrepancy compared to original result. And they interpreted this additional effect (behold) as proof of Equivalence principle and based some new theory on it. So this is not mainstream and this is why Im placing this thread into Alternative theories. Here are related papers: https://www.researchgate.net/public...onfirmation_of_the_corrected_result_by_Kundig https://www.researchgate.net/public...ossible_explanation_of_the_extra_energy_shift There was some kind of rebuttal to the published anomalous results: http://arxiv.org/abs/1602.04212 But to my surprise, the rebuttal did not dismissed the anomalous results, but rather tried to explain it by (mainstream) GR. But if I understand it right, it means, that there is time dilation caused by rotating system. I know, it is quite complex topic, but I wonder what are your views on it.