libc/stdtime/tzset.3

39 .Nd initialize time conversion information
53 initializes time conversion information used by the library routine
62 to local wall clock time, as specified by the
71 Universal Time (UTC) is used (without leap second correction).
79 file from which to read the time conversion information.
83 pathname relative to the system time conversion information directory.
86 pathname of a file (as described above) from which to read the time
89 specification (the format is described below) of the time conversion
103 Universal Time (UTC) and the local time.
106 variable is set to 0 if the local timezone is observing standard time.
107 It is set to 1 if the local timezone ever observes an alternate time,
108 such as summer time.
111 array is the timezone name of standard time, while the second element
112 is the name of the altnerative time zone.
116 is used directly as a specification of the time conversion information,
134 time zone.
139 is missing, then summer time does not apply in this locale.
154 Indicates the value one must add to the local time to arrive at
155 Coordinated Universal Time.
185 summer time is assumed to be one hour ahead of standard time.
193 the time zone shall be east of the Prime Meridian; otherwise it shall be
197 Indicates when to change to and back from summer time.
202 .Em date/time,date/time
207 describes when the change from standard to summer time occurs and the
212 .Em time
213 field describes when, in current local time, the change to the other
214 time is made.
268 .Em time
277 .Em time
291 in the system time conversion information directory are used, with the
292 standard and summer time offsets from UTC replaced by those specified
307 local time zone file
309 time zone directory
325 .Xr time 3 ,