Keeping time on an air-gapped network

[Clark, Patti]

How is anyone managing time on an air-gapped network?  Also, I am
looking to set up a RHEL server to be THE time server.  Suggestions on
how to set that up without an available external time service?  Is there
better reading material other than the man pages?

Patti Clark
Sr. Unix System Administrator - RHCT, GSEC
Office of Scientific and Technical Information