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I was wondering whether any provision is made in the NTP standard to synchronize time between machines travelling near the speed of light relative to each other. Does NTP even work in these conditions?
I suppose it might not be practical to want to do this, because you will be getting their time and not your own time, but suppose you wanted to know what their time is, very precisely - could you do it with NTP?
I'm not well-versed in either NTP or relativity, but it just seemed like an interesting thing to think about.
The caesium time standards around the world require relativistic correction to compensate the rotational speeds of the earth at different latitudes, but NTP standards do not need any such accuracy, because of the unpredictable transmission delays, which would be grossly exaggerated in a client travelling at near the speed of light. – AFH – 2015-05-27T10:08:21.797