How to sync the time between 2 Ubuntu systems on an isolated network

I wanted to match the times between two systems on an isolated network running Ubuntu 22. This can be done using chrony (https://chrony.tuxfamily.org) on the two systems - one system serves as the local time server to the other client system. 

Setting up the Server

1. Optional. If chrony is not installed, run the following command in the Terminal to install it.
   
   $ sudo apt install chrony
   
   
2. Using a text editor, add the following lines to the file /etc/chrony/chrony.conf.
   
   
   local stratum 8
   allow xxx.xxx.xxx.xxx
   
   Note 1: The keyword local tells chrony to server isolated networks.
   Note 2: The allow keyword specifies the IP address of the client to server
   
   
3. Restart the chrony service using the following command. Or you can reboot.
   
   $ sudo systemctl restart chronyd
   

Setting up the Client

1.  Optional. If chrony is not installed, run the following command in the Terminal to install it.
   
   $ sudo apt install chrony
   
   
2. Using a text editor, add the following to the file /etc/chrony/chrony.conf.
   
   server yyy.yyy.yyy.yyy minpoll 0 maxpoll 5 maxdelay 0.1
   
   
3. Restart the chrony service using the following command. Or reboot.
   
   $ sudo systemctl restart chronyd
   
   
4. To verify whether the syncing is working, the following command can be used.
   
   $ chronyc sources -v
   
   
   
   Note: If the sync is successful, the MS column should be showing the symbols ^* for the IP address of the server entry.