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

     zdump -- timezone dumper

     zdump [--version] [-v] [-c	[loyear,]hiyear] [zonename ...]

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

     The following options are available:

	     Output version information	and exit.

     -v	     For each zonename on the command line, print the time at the low-
	     est possible time value, the time one day after the lowest	possi-
	     ble 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 pos-
	     sible time	value, Each line ends with isdst=1 if the given	time
	     is	Daylight Saving	Time or	isdst=0	otherwise.

     -c	loyear,hiyear
	     Cut off 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.

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

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

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

FreeBSD	11.1			 June 20, 2004			  FreeBSD 11.1


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