GPS satellite clocks run faster than Earth-based clocks by 38 microseconds per day due to relativity effects, requiring constant correction.
Sources
- https://www.astronomy.ohio-state.edu/pogge.1/Ast162/Unit5/gps.html (astronomy.ohio-state.edu)
- https://courses.ems.psu.edu/geog862/node/1714 (courses.ems.psu.edu)
- https://www.nist.gov/atomic-clocks/a-powerful-tool-for-science/putting-einstein-test (nist.gov)
- https://www.gpsworld.com/inside-the-box-gps-and-relativity/ (gpsworld.com)
- https://en.wikipedia.org/wiki/Error_analysis_for_the_Global_Positioning_System (en.wikipedia.org)
- https://arxiv.org/pdf/gr-qc/0306076 (arxiv.org)
- https://arxiv.org/pdf/gr-qc/9504017 (arxiv.org)
- https://arxiv.org/pdf/gr-qc/0504085 (arxiv.org)
- https://arxiv.org/pdf/gr-qc/9702010 (arxiv.org)
- https://arxiv.org/pdf/gr-qc/0405001 (arxiv.org)