ut-oh ;) we may have a future stratum 1 time server owner soon..
ntp is fascinating to me.. There are few around here as well that run their own.. It can be done fairly cheaply with pi and a gps hat for it.
Some interesting threads if you look for them.. Some have some really great setups, mine is bit older and not as accurate as it could be.. It sub 1ms, have seen like 20ns setups..
I have not gotten into the tinker with it mood in quite some time to play around with tweaking it to see if could get it to be more stable. Last thing I did with it really was switch it to running ntpsec... I should prob reset up my monitoring of it I guess ;) To better track how well its doing..
pi@ntp:~ $ ntpq
ntpq> pe
remote refid st t when poll reach delay offset jitter
=======================================================================================================
*SHM(1) .PPS. 0 l - 8 377 0.0000 -0.0388 0.0088
Looks to be within 40ns - but should prob graph that to see how its drifting, etc.