Aha - I am running timesyncd (I think) and don't have ntp on this RPi. I will need to find a few more wits before going after changing from timesyncd to ntp. But this suggestion - and sorting out the subtleties of ntp so I can switch back and forth between using this RPi in my base (a travel trailer) and using it as a portable rig for POTA on the go.
Thanks again for your timely suggestions.
Jim
KM6GUO