https://forum.universal-devices.com/topic/12687-ntp-server-issues-with-nist1-sjustimingorg/
NTP Server issues with nist1-sj.ustiming.org - ISY994 - Universal Devices Forum
Anyone using "nist1-sj.ustiming.org" (San Jose, CA) for your NTP Server (time sync) be aware that they are having sync errors so you might want to change to a...
ntp server