jreicherInteresting. This guy is sponsored by Jane Street.
ParaWhat is time? We just don't know.
ParaJeff Geerling has some content on running a modern accurate timeserver. It's apparently still quite hard.
jreicherTime is a function of entropy. :p
jreicherRegarding difficulty, it depends how accurate you want to be. I let ntp do most of the work and applied for permission to connect to some stratum 1 servers because I was contributing mine to the public ntp pool. I think I was within 100ms most of the time.
jreicherThe funniest thing was seeing the time drift with ambient temperature changes through the day though. I'm guessing it affected the crystal on the clock chip; I don't think it could have been anything else.
jreicherIt was almost a perfect sine wave sometimes
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ChronosPara: I follow Jeff Geerling on YouTube. I had no idea keeping accurate time could be such a rabbit hole! And I like it that Java has good date/time functionality built into the standard library. Just trying to keep things on-topic. ;)
ParaJava got it wrong, then horribly wrong, then kinda right, exactly right, and finally almost right.