osf1 man page for rdate

rdate(8)						      System Manager's Manual							  rdate(8)

NAME
       rdate - network date client

SYNOPSIS
       /usr/sbin/rdate [-s] [-v] [network]

OPTIONS
       The system date and time will be set to the median value.  The time values returned by all responding hosts will be reported.

DESCRIPTION
       The rdate command is invoked at boot time to reset the system date and time to the current network date and time. The rdate program sends a
       broadcast datagram packet on the specified network or on the system default network if no network is specified. The program will then  wait
       two seconds for responses.  After that time, the arithmetic median of the responses is taken.

RESTRICTIONS
       In order for rdate to determine a network time, at least one of the running hosts on the network must be running the internet time service.
       Machines with their own battery-backed-up time-of-day clock may not desire to set time in this manner.

SEE ALSO
       Commands: date(1)

																	  rdate(8)