Or... Install one of these on a Pi somewhere in your network and use that as a time source for all of your devices. Problem solved for all your machines.
So you know, sbts-aru is an audio recording program. However, in one command it sets an an overlayFS protected SD card setup and chrony GPS based time synchronization. You can turn off all the recording related stuff and then you have a stratum #1 time server for your network. Real easy, real cheap. No more time problems.
There's no reason now for all geeks not to have at least one stratum #1 time server in their networks. Really none.
Getting time from DCF77 seems like the best solution for timekeeping on a lot of computers, but there don't seem to be nicely packaged ones over USB etc. I had a quick look for Pi receivers and none of them looked to be nicely packaged, but with an external antenna.