ntpq

Query the Network Time Protocol (NTP) daemon. More information: https://www.eecis.udel.edu/~mills/ntp/html/ntpq.html.

Start ntpq in interactive mode:

ntpq --interactive

Print a list of NTP peers:

ntpq --peers

Print a list of NTP peers without resolving hostnames from IP addresses:

ntpq --numeric --peers

Use ntpq in debugging mode:

ntpq --debug-level

Print NTP system variables values:

ntpq --command={{rv}}