Adam Space <time.isan...@gmail.com> wrote on Mon, 27 Dec 2021 at 14:10:45 EST in <CAJiJePpk7q9Y7d2Tw6_Ruk+=bepa+pjtvu21as1kmkr4gox...@mail.gmail.com>:
> As a younger person I appreciate this write-up. It is interesting to see > the progression. Nowadays, phones are synchronized to within a second > easily, and probably within 10ms Would this were true, but it's not and you cannot rely on it. Most notably for me is when I have my cellphone set to sync time to the network, every few months websites stop working and I look and it's bceuase the date has been reset back to 2011 or 2003 and so SSL certificate validity ranges are exceeded. And this with a major US telephone vendor whose corporate parents were RBOCs and a major handset manufacturer, flaw most recently seen in mid-2021. I suppose it's probably just a handful of cell sites that are misconfigured, but good luck getting it fixed. > With computers too, I would bet that most come out of the box with > some sort of NTP setup that at the very least keeps them within a > few seconds, depending on how often the default polling interval > is. This is a lot closer to truth, but there's still a lot to go wrong. Still, it's correct that if you care to get the time to within a tenth of second, which is all most people need, using a computer in a deliberate fashion is the easiest way to get there. -- jh...@alum.mit.edu John Hawkinson _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
