How do I enable ntpd to serve ntp clients (using macOS 10.14 Mojave)?

Solution 1:

From Macrumors (in the Mojave 'All the little things' thread):

Time sync: ntpd has been replaced by timed: not the old school unix one, but a new apple invention.

Have linked the timed Man page for ya:

https://www.unix.com/man-page/mojave/8/timed/

Solution 2:

So I found the best solution for my situation. I ended up installed Docker CE for Mac, then running a docker instance of NTP. This achieved the desired results of getting an NTP service running on a the segregated network segment without having to have it routable to the internet.

Docker CE for Mac

docker NTP container on github