DOKK / manpages / debian 10 / systemd / systemd-timedated.service.8.en
SYSTEMD-TIMEDATED.SERVICE(8) systemd-timedated.service SYSTEMD-TIMEDATED.SERVICE(8)

systemd-timedated.service, systemd-timedated - Time and date bus mechanism

systemd-timedated.service

/lib/systemd/systemd-timedated

systemd-timedated is a system service that may be used as a mechanism to change the system clock and timezone, as well as to enable/disable NTP time synchronization. systemd-timedated is automatically activated on request and terminates itself when it is unused.

The tool timedatectl(1) is a command line client to this service.

See the developer documentation[1] for information about the APIs systemd-timedated provides.

$SYSTEMD_TIMEDATED_NTP_SERVICES

Colon-separated list of unit names of NTP client services. If not set, then systemd-timesyncd.service(8) is used. See the entries of NTP related commands of timedatectl(1) for details about this.

Example:

SYSTEMD_TIMEDATED_NTP_SERVICES=ntpd.service:chronyd.service:systemd-timesyncd.service

systemd(1), timedatectl(1), localtime(5), hwclock(8), systemd-timesyncd(8)

1.
developer documentation
https://www.freedesktop.org/wiki/Software/systemd/timedated
systemd 241