php man page for zdump

ZDUMP(1)						      General Commands Manual							  ZDUMP(1)

NAME
       zdump - time zone dumper

SYNOPSIS
       zdump [ -v ] [ -c cutoffyear ] [ zonename ... ]

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

       These options are available:

       -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 possible time value, Each line ends with isdst=1 if the given time is Day-
	      light Saving Time or isdst=0 otherwise.  zonename should be the relative path file name from  /usr/share/zoneinfo/  which  directory
	      contains all zone data.

       -c cutoffyear
	      Cut off the verbose output near the start of the given year.

SEE ALSO
       ctime(3), zic(8)

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