OS Manuals

systemd-time-wait-sync.service(8)

SYSTEMD-TIME-WAIT-SYNC.SERVICE(8) systemd-time-wait-sync.service SYSTEMD-TIME-WAIT-SYNC.SERVICE(8)


.SH "NAME" systemd-time-wait-sync.service, systemd-time-wait-sync - Wait until kernel time is synchronized


.SH "SYNOPSIS"


.PP systemd-time-wait-sync.service


.PP /usr/lib/systemd/systemd-time-wait-sync


.SH "DESCRIPTION"


.PP systemd-time-wait-sync is a system service that delays the start of units that are ordered after time-sync.target (see systemd.special(7) for details) until the system time has been synchronized with an accurate remote reference time source by systemd-timesyncd.service.


.PP systemd-timesyncd.service notifies systemd-time-wait-sync about successful synchronization. systemd-time-wait-sync also tries to detect when the kernel marks the system clock as synchronized, but this detection is not reliable and is intended only as a fallback for compatibility with alternative NTP services that can be used to synchronize time (e.g., ntpd, chronyd).


.SH "FILES"


.PP /run/systemd/timesync/synchronized


The presence of this file indicates to this service that the system clock has been synchronized.


Added in version 239.


.RE


.SH "SEE ALSO"


.PP systemd(1), systemd.special(7), systemd-timesyncd.service(8)

systemd 262.2

systemd 262.2-r1 · os · ingested 2026-11-06