3 zdump - time zone dumper
6 zdump [ --version ] [ -v ] [ -c [loyear,]hiyear ] [ zonename
10 Zdump prints the current time in each zonename named on the
13 These options are available:
16 Output version information and exit.
18 -v For each zonename on the command line, print the time
19 at the lowest possible time value, the time one day
20 after the lowest possible time value, the times both
21 one second before and exactly at each detected time
22 discontinuity, the time at one day less than the
23 highest possible time value, and the time at the
24 highest possible time value, Each line ends with
25 isdst=1 if the given time is Daylight Saving Time or
29 Cut off verbose output near the start of the given
30 year(s). By default, the program cuts off verbose
31 output near the starts of the years -500 and 2500.
34 The -v option may not be used on systems with floating-point
35 time_t values that are neither float nor double.
37 Time discontinuities are found by sampling the results
38 returned by localtime at twelve-hour intervals. This works
39 in all real-world cases; one can construct artificial time
40 zones for which this fails.
43 newctime(3), tzfile(5), zic(8)