What causes the GPS offset/shift in China?
127561
Understanding the difference between coordinates projection in OSM and Google Maps in China
57781
How does "wrong-warping" happen, and how can I do it myself?
127513
Calculate bearing between two decimal GPS coordinates
146915
The purpose of the post_date_gmt?
36719
Gravitational time dilation at the earth's center
51026
Time dilation all messed up!
117861
Long range Trilateration from 3 lat, long, range
154570
GPS PPS signal corresponds to data time?
122844
Historical reason behind different line ending at different platforms
114869
Is it possible to determine the Geolocation method used?
23578
Algorithm for offsetting a latitude/longitude by some amount of meters
100092
Problems with certain times occuring twice (or not at all) on night of daylight saving time to standard time transition
41340
Why do clocks measure arc-length?
94029
Improve GPS accuracy by disabling cellular data
93896
Why is the QGIS map composer grid showing unreasonable lat/lon?
152083
How does GPS in a mobile phone work exactly?
76294
Coordinates all wrong on iPhone 3G? It could be your compiler