For scientific meteor hunting its essential that your stations have accurate timings. Even a few seconds error in timestamps will change the calculated orbits massively. If your computers are connected to the internet you can synchronise them to internet time, but many observatories are on slow or nonexistent networks.
The attached design could solve this problet. At the UKMON conference in 2018 Edward from Cardiff University showed off an Arduino based timeserver suitable for use in remote locations without a reliable internet connection by using GPS timing signals instead.
The attached PDF explains how to build this unit, an example of which is shown below.
