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+NAME
+
+     zdump - time zone dumper
+
+SYNOPSIS
+     zdump [ --version ] [ -v ] [ -c [loyear,]hiyear ] [ 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 possible 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.
+
+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
+     newctime(3), tzfile(5), zic(8)