[xorcist]

It is also important to realize that an atomic clock will only give you a steady pulse. It will count seconds for you, and do so very accurately, but that is not the same as knowing what time it is.

If you get a rubidium clock for your garage, you can sync it up with GPS to get an accurate-enough clock for your hobby NTP project, but large research institutions and their expensive contraptions are more elaborate to set up.

[badmonkey0001]

There are dedicated turnkey vendors these days, so there's no need to get elaborate. All you need is a U of rack or two and enough cash.

Example: https://www.accubeat.com/ntp-ptp-time-servers