> 
> Ask the ntp server what peers it is synchronizing with:
> 
>    $ ntpdc
>    ntpdc> peers
>         remote           local      st poll reach  delay   offset    disp
>    =======================================================================


It always updates just fine when manually triggered. Here are the
results of ntpdc on one server.
=======================================================================
*LOCAL(0)        127.0.0.1       10   64   37 0.00000  0.000000 0.66202
=skipjack.no-suc x.x.x.x      2   64   37 0.04286 -0.202652 0.66272
=newt.de.20six.n x.x.x.x      4   64   37 0.10655 -0.086566 0.66327
=h-67-100-8-5.ny x.x.x.x      3   64   37 0.05330 -0.172124 0.67487


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