4 ms·
The timebases which are transmitted by the GNSS systems are in turn synchronized to the TAI network, which are all located on Earth's surface. Time does appear
by brandmeyer 7y ago
The timebases which are transmitted by the GNSS systems are in turn synchronized to the TAI network, which are all located on Earth's surface. Time does appear to be passing noticeably slower on Earth's surface compared to precision clocks in orbit. Even on the surface if you measure very carefully, you'll find that the SI second varies with respect to TAI depending on your altitude above mean sea level, too.
Civil time is therefore already partly divorced from the SI second due to this effect. Why not divorce it the rest of the way?
- perilunar 7y agoI'm not disputing that clocks at altitude appear to run faster relative to clocks at sea level - as you said time is passing slower down here. But a second is always and everywhere the same 'number of shakes' locally.