GPS will broadcast a 0 second leap second in 128 days. This will cause no issues

Re:GPS will broadcast a 0 second leap second in 128 days. Th... by amluto on Saturday July 24, 2021 @07:59PM (#27945437)

I expect that whatever ephemerides the military uses are perfectly capable of handling UTC-TAI offset (and relativistic correction and refractive correction and orbital perturbation and speed-of-light correction for the observer’s location and pretty much any other error you can think of).

Whether the instruments being used are precise enough for any of this to matter is a different story. I’m quite curious whether military clocks correct their own relativistic errors. Military satellites almost certainly do.

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Re:GPS will broadcast a 0 second leap second in 128 days. Th... by beerandt on Saturday July 24, 2021 @08:22PM (#27945548)

The Navy is historically in charge of keeping official time in the US, and many other countries.

It's not that they can or can't make adjustments vs any other standard of keeping time, it's that they don't have to.

Whatever may (or may not) make sense today, we adjust to Navy time, because that's what's official, and that's what GPS time is ultimately based on.

Re, relativistic corrections, I don't know the answer for sure, but they average the time between multiple (I think cesium?) atomic clocks. If those clocks all shared the ~same reference frame, I'd think, by definition, you'd not need to make a relativistic adjustment. The frame you'd reference to is the one you're already in.

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