The basis for the GPS time sync is an atomic clock on board each satellite. I very much doubt Starlink is placing one of those in their birds :-)

Best,

Mike
On Jun 12, 2021, 16:00 +0200, Michael Richardson <mcr@sandelman.ca>, wrote:

Dave Taht <davet@teklibre.net> wrote:
It’s ironic that the device has to have gps in it, and thus should be
able to provide perfect time to clients directly behind it, isn’t.

Couldn't starlink satellites *also* provide a GPS reference?
They are lower and way more of them...

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