> You might check the system logs; if there was a time server
> sync there should be a note in there.

We synch every 10 minutes at 0,10,20,30,40,50 minute mark.
That doesn't cover 15:05 where my 7 second glitch happened.

I ran a mess of tests overnight.  About 200,000 iterations of
[time/sleep/time] in all.  I read the results this morning
programmatically.
There were some 1-second anomalies (my smallest measurable granularity).
All except 2 spanned a timeserver resynch.

Those other 2 each occurred slightly before 01:49:41, in parallel jobs.
That's a half minute shy of a time resynch.  Each woke up in 9 seconds,
not 10.
There were 29 other parallel jobs doing exactly the same thing at 1:49 &
they all behaved appropriately.
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