Yeah. Though good god ntpd has a lot of failure modes. I just noticed another one: suspend a machine for twelve hours or so, so its awful hardware clock has to take the burden of keeping time, then resume it. ntpd silently decides that the time has drifted too far for slewing to work, and decides that it is best to do nothing. Log anything? Of course it doesn't log anything, why would you care that your time is suddenly not synchronized!