yes. And there are radio telescope arrays that are synced up to do delta
interferometry, over thousands of kilometers. Syncing up time over a few
dozen meters is no challenge - and the reason for that ease is that
physical time is neatly and uniformly broadcasted by nature in a pretty
dependable way, at around 300 thousand kilometers per second.
the challenge is to make it cheap enough for commodity hw. I.e. no extra
CPU pins or lines in critical parts of the board, no extra power, low
transistor count, no impact on any critical path, short and reliable
clock readout after powerup, etc. But that is quite possible too IMO,
and the payback is very real.
[ OTOH, this is a world that still ships FreeDOS on many whitebox PC
instead of putting Linux on it, so dont expect logic to prevail
in all cases ;-) ]
Ingo
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