ntpd(8) man page — Describes ntpd in detail, including the command line options.

ntp.conf(5) man page — Contains information on how to configure associations with servers and peers.

ntpq(8) man page — Describes the NTP query utility for monitoring and querying an NTP server.

ntpdc(8) man page — Describes the ntpd utility for querying and changing the state of ntpd.

ntp_auth(5) man page — Describes authentication options, commands, and key management for ntpd.

ntp_keygen(8) man page — Describes generating public and private keys for ntpd.

ntp_acc(5) man page — Describes access control options using the restrict command.

ntp_mon(5) man page — Describes monitoring options for the gathering of statistics.

ntp_clock(5) man page — Describes commands for configuring reference clocks.

ntp_misc(5) man page — Describes miscellaneous options.

ntp_decode(5) man page — Lists the status words, event messages and error codes used for ntpd reporting and monitoring.

ntpstat(8) man page — Describes a utility for reporting the synchronization state of the NTP daemon running on the local machine.

ntptime(8) man page — Describes a utility for reading and setting kernel time variables.

tickadj(8) man page — Describes a utility for reading, and optionally setting, the length of the tick.