Index: share/man/man5/rc.conf.5
===================================================================
--- share/man/man5/rc.conf.5
+++ share/man/man5/rc.conf.5
@@ -2562,6 +2562,14 @@
 synchronize the system clock only
 .Em once
 from some standard reference.
+.Pp
+Note that the use of the
+.Va ntpd_sync_on_start
+variable is a preferred alternative to the
+.Xr ntpdate 8
+utility as
+.Xr ntpdate 8
+is to be retired from the NTP distribution.
 .It Va ntpdate_config
 .Pq Vt str
 Configuration file for