-public internet (e.g., because of restrictive firewall rules), you
-need to setup local NTP servers and tell `systemd-timesyncd` to use
-them:
+public internet due to restrictive firewall rules, you
+need to set up local NTP servers and tell the NTP daemon to use
+them.
+
+For systems using chrony:
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Specify which servers `chrony` should use in `/etc/chrony/chrony.conf`:
+
+----
+server ntp1.example.com iburst
+server ntp2.example.com iburst
+server ntp3.example.com iburst
+----
+
+Restart `chrony`:
+
+ # systemctl restart chronyd
+
+Check the journal to confirm that the newly configured NTP servers are being
+used:
+
+ # journalctl --since -1h -u chrony
+
+----
+...
+Aug 26 13:00:09 node1 systemd[1]: Started chrony, an NTP client/server.
+Aug 26 13:00:15 node1 chronyd[4873]: Selected source 10.0.0.1 (ntp1.example.com)
+Aug 26 13:00:15 node1 chronyd[4873]: System clock TAI offset set to 37 seconds
+...
+----
+
+For systems using systemd-timesyncd:
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Specify which servers `systemd-timesyncd` should use in
+`/etc/systemd/timesyncd.conf`: