SYSTEMD-TIMEDATED.SERVICE(8) systemd-timedated.service SYSTEMD-TIMEDATED.SERVICE(8)

.SH "NAME" systemd-timedated.service, systemd-timedated - Time and date bus mechanism

.SH "SYNOPSIS"

.PP systemd-timedated.service

.PP /usr/lib/systemd/systemd-timedated

.SH "DESCRIPTION"

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

.PP The tool [**timedatectl**(1)](/man/os/systemd/timedatectl.1) is a command line client to this service.

.PP systemd-timedated currently offers access to the following four settings:

•The system time

•The system timezone

•A boolean controlling whether the system RTC is in local or UTC timezone

•Whether the time synchronization service is enabled/started or disabled/stopped, see next section.

.PP See [**org.freedesktop.timedate1**(5)](/man/os/systemd/org.freedesktop.timedate1.5) and [**org.freedesktop.LogControl1**(5)](/man/os/systemd/org.freedesktop.LogControl1.5) for information about the D-Bus API.

.SH "LIST OF NETWORK TIME SYNCHRONIZATION SERVICES"

.PP **systemd-timedated** will look for files with a .list extension in ntp-units.d/ directories. Each file is parsed as a list of unit names, one per line. Empty lines and lines with comments (#) are ignored. Files are read from /usr/lib/systemd/ntp-units.d/ and the corresponding directories under /etc/, /run/, /usr/local/lib/. Files in /etc/ override files with the same name in /run/, /usr/local/lib/, and /usr/lib/. Files in /run/ override files with the same name under /usr/. Packages should install their configuration files in /usr/lib/ (distribution packages) or /usr/local/lib/ (local installs).

.PP **Example 1. ntp-units.d/ entry for systemd-timesyncd**

```
# /usr/lib/systemd/ntp-units.d/80-systemd-timesync.list
systemd-timesyncd.service
```

.PP If the environment variable *$SYSTEMD\_TIMEDATED\_NTP\_SERVICES* is set, **systemd-timedated** will parse the contents of that variable as a colon-separated list of unit names. When set, this variable overrides the file-based list described above.

.PP **Example 2. An override that specifies that chronyd should be used if available**

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

.SH "SEE ALSO"

.PP [**systemd**(1)](/man/os/systemd/systemd.1), [**timedatectl**(1)](/man/os/systemd/timedatectl.1), [**localtime**(5)](/man/os/systemd/localtime.5), [**hwclock**(8)](/man/os/systemd/hwclock.8), [**systemd-timesyncd**(8)](/man/os/systemd/systemd-timesyncd.8), [**org.freedesktop.timedate1**(5)](/man/os/systemd/org.freedesktop.timedate1.5)

systemd 262.2

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Document: systemd-timedated.service(8) from systemd 262.2-r1 (Chainguard OS)
Source: https://github.com/systemd/systemd