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Shout out also to the NTP Pool, a volunteer group of NTP servers that is the common choice for a lot of devices. Particularly open source stuff. Microsoft, Apple, and Google all run their own time servers but the NTP Pool is a great resource for almost everything else. https://www.ntppool.org/en/

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Reminds me of that time when the NTP pool was basically ddos'ed by a buggy Snapchat release to iOS devices. https://community.ntppool.org/t/recent-ntp-pool-traffic-incr...

Or when Netgear flooded the University of Wisconsin by hardcoding their NTP server's IP address into some of their home routers:

https://pages.cs.wisc.edu/~plonka/netgear-sntp/

I was in the pool for a while using a RIPE NCC gps synced pci card. It was fun, but machineroom dynamics made keeping a dome antenna attached was hard: they hate special cables, and roof access is a security and water nightmare.

A rubidium clock is pretty cheap these days anyway.

Now, I'm on Bert Huberts gps drift and availability thing with a raspberry pi measuring visibility and availability out my home office window. Much more fun.

Do you have a link for what you are doing now? Seems interesting!

https://berthub.eu/articles/posts/galmon-project/

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