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sntpclock(1)		    General Commands Manual		  sntpclock(1)

NAME
       sntpclock - check a system's clock through NTP

SYNOPSIS
       sntpclock host

DESCRIPTION
       sntpclock  connects  to	an NTP server on host.	host must be a dotted-
       decimal IP address.

       sntpclock prints	a 16-byte TAI64NA adjustment that, when	added  to  the
       local UNIX clock, will produce the TAI clock on host.  sntpclock	limits
       the adjustment to 2 days.

       sntpclock does not bind to port 123; this means that it does  not  need
       to run as root.	Note that some firewalls will not permit sntpclock re-
       quests.

NOTES
       An NTP timestamp	is a count of non-leap seconds.	 sntpclock uses	a  lo-
       cal leap-second table to	convert	the NTP	timestamp to TAI with an epoch
       of 1970-01-01 00:00:10 TAI.  For	a discussion of	the difference between
       UTC and TAI see http://pobox.com/~djb/proto/utctai.html.

       The current NTP time scale will break down in 2036.

SEE ALSO
       clockspeed(1),  clockadd(1),  clockview(1),  taiclock(1),  leapsecs(3),
       xntpd(8)

								  sntpclock(1)

NAME | SYNOPSIS | DESCRIPTION | NOTES | SEE ALSO

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