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NetBSD 6.1.5 - man page for zdump (netbsd section 8)

ZDUMP(8)			   BSD System Manager's Manual				 ZDUMP(8)

NAME
     zdump -- time zone dumper

SYNOPSIS
     zdump [--version] [-v] [-c [loyear,]highyear] [zonename ...]

DESCRIPTION
     zdump prints the current time in each zonename named on the command line.

     These options are available:
     --version	Output version information and exit.
     -v 	For each zonename on the command line, print the time at the lowest possible time
		value, the time one day after the lowest possible time value, the times both one
		second before and exactly at each detected time discontinuity, the time at one
		day less than the highest possible time value, and the time at the highest possi-
		ble time value, Each line ends with
		      isdst=1
		if the given time is Daylight Saving Time or
		      isdst=0
		otherwise.
     -c [loyear,]highyear
		Cut off the verbose output near the start of the given year(s).  By default, the
		program cuts off verbose output near the starts of the years -500 and 2500.

LIMITATIONS
     The -v option may not be used on systems with floating-point time_t values that are neither
     float nor double.

     Time discontinuities are found by sampling the results returned by localtime at twelve-hour
     intervals.  This works in all real-world cases; one can construct artificial time zones for
     which this fails.

SEE ALSO
     ctime(3), tzfile(5), zic(8)

BSD					 October 29, 2003				      BSD


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