[teraflop]

Interestingly, it depends on your altitude. For objects in a low, fast orbit such as the ISS, time runs slower; in higher, slower orbits, such as GPS and geostationary communications satellites, time runs faster. In between these points, the effects cancel out at an altitude of roughly 3000km.

https://en.wikipedia.org/wiki/Time_dilation#/media/File:Time...

However, both effects can be ignored for almost all purposes. The effect of time dilation is less than 1 part per billion, which is basically undetectable without an atomic clock.

[jononor]

Yes, especially because clock drift on the crystals is several orders of magnitude higher. Often 10 parts per million, or more.