How to coordinate the clock when dual-booting with Windows

[Xen]

Grizzly via ubuntu-users schreef op 10-12-2017 21:59:

> Set the windows side to sync (third tab internet time) with the time 
> server of
> your choice, that way if/when you boot Wondowz it will check first? (or 
> maybe
> it will  change then check then adjust, who can tell with windowz)

It stupidly doesn't check on every boot.