That is the nice thing about chrony. It tries to synchronize clocks even when offline, it works not only on a reboot. If it works as advertized (and I tried it

That is the nice thing about chrony. It tries to synchronize clocks even when offline, it works not only on a reboot. If it works as advertized (and I tried it some years ago at home and it worked there, for what it's worth), it should fix all of the issues described in the article.