According to a reference[1] from Wikipedia[2] the effect would be 45 μs for general relativity 7 μs for special relativity, combining into a 38 μs drift. So al

According to a reference[1] from Wikipedia[2] the effect would be 45 μs for general relativity 7 μs for special relativity, combining into a 38 μs drift. So although you are technically correct (45 > 7) they are both significant. [1] http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps.html http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps.... [2] https://en.wikipedia.org/wiki/Global_Positioning_System#History https://en.wikipedia.org/wiki/Global_Positioning_System#Hist...