Time - No internet reference

Ok y’all…my time is reverting to system time, which is 20 min behind. Ntp sends errors that it cannot connect to the ntp servers. I have tried different ip’s, but it never connects.

I can set my router via my computer time, but how would I get openhab to get its time from my router?

A router, that’s new.

Please explain- which system time? Your Pi maintains a clock - openHAB will usually use the same clock time, BUT can be configured to use a different timezone. Do you mean openHAB time is not Pi system time?

I don’t think you can, unless your router supports providing an NTP server.
BUT
I think you can configure Pi to get time via DHCP from router.
This looks helpful
https://codingtim.github.io/raspberry-pi-ntp-dhcp/

If all this is important to you, you might want to get a hardware RTC for your Pi

It is important. Involves gardening. My router does support ntp. I do not know how to answer your question about system time, but I am using the clock tick rule from rikoshack. All I know, my openhab time, which is an item called system time, is 20 min behind my actual time.