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* manual/time.texi (TZ Variable): Modernize North America example

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to reflect current (i.e., 2007-and-later) daylight saving rules.
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Paul Eggert 2013-09-18 12:58:13 -07:00
parent 674762d904
commit 69947401b9
2 changed files with 9 additions and 5 deletions
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ChangeLog
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@ -1,5 +1,8 @@
2013-12-17 Paul Eggert <eggert@cs.ucla.edu>
* manual/time.texi (TZ Variable): Modernize North America example
to reflect current (i.e., 2007-and-later) daylight saving rules.
* manual/time.texi (TZ Variable): POSIX.1 hour can be 24.
2013-12-17 Joseph Myers <joseph@codesourcery.com>

11
manual/time.texi
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@ -2088,15 +2088,16 @@ The @var{time} fields specify when, in the local time currently in
effect, the change to the other time occurs. If omitted, the default is
@code{02:00:00}.
For example, here is how you would specify the Eastern time zone in the
United States, including the appropriate Daylight Saving Time and its dates
of applicability. The normal offset from UTC is 5 hours; since this is
Here is an example @code{TZ} value, including the appropriate
Daylight Saving Time and its dates of applicability. In North
American Eastern Standard Time (EST) and Eastern Daylight Time (EDT),
the normal offset from UTC is 5 hours; since this is
west of the prime meridian, the sign is positive. Summer time begins on
the first Sunday in April at 2:00am, and ends on the last Sunday in October
March's second Sunday at 2:00am, and ends on November's first Sunday
at 2:00am.
@smallexample
EST+5EDT,M4.1.0/2,M10.5.0/2
EST+5EDT,M3.2.0/2,M11.1.0/2
@end smallexample
The schedule of Daylight Saving Time in any particular jurisdiction has