From cary.millsap@method-r.com on 2012-05-03 17:31:02
:
Graham,
Using Time::Zone in TimeDate v1.20, I've found that tz2zone() doesn't
convert time zones of the form "America/Chicago" to a value usable by
tz_offset. My OS (Mac OS X, Linux, Solaris) does consider TZ values of the
form "America/Chicago" to be valid:
$ zdump "America/Chicago"
America/Chicago Thu May 3 12:23:16 2012 CDT
Here is a test in Perl that illustrates the problem:
$ more t.pl
use strict;
use warnings;
use Time::Zone;
$ENV{TZ} = "-0500";
printf "%20s %20s %20s\n", qw(input tz2zone tzoffset(tz2zone));
printf "%20s %20s %20s\n", '-'x20, '-'x20, '-'x20;
for (qw(-0500 CST6CDT America/Chicago)) {
printf "%20s %20s %20s\n", $_, tz2zone($_),
tz_offset(tz2zone($_))//"undef";
}
$ perl t.pl
input tz2zone tzoffset(tz2zone)
-------------------- -------------------- --------------------
-0500 -0500 -18000
CST6CDT CST -21600
America/Chicago America/Chicago undef
Thank you for looking into it.
Cary Millsap
From gbarr@pobox.com on 2012-05-03 17:38:42
:
On May 3, 2012, at 12:31 , Cary Millsap via RT wrote:
> Using Time::Zone in TimeDate v1.20, I've found that tz2zone() doesn't
> convert time zones of the form "America/Chicago" to a value usable by
> tz_offset. My OS (Mac OS X, Linux, Solaris) does consider TZ values of the
> form "America/Chicago" to be valid:
tz2zone was never intended to support named zones, it was intended to
convert the likes of -0800 etc.
I would suggest using DateTime::TimeZone to convert named timezones.
Graham.
From cary.millsap@method-r.com on 2012-05-03 17:52:04
:
Thank you, Graham. I'll look there.
Cary
On Thu, May 3, 2012 at 12:38 PM, Graham Barr via RT <
bug-TimeDate@rt.cpan.org> wrote:
> <URL: https://rt.cpan.org/Ticket/Display.html?id=76968 >
>
> On May 3, 2012, at 12:31 , Cary Millsap via RT wrote:
> > Using Time::Zone in TimeDate v1.20, I've found that tz2zone() doesn't
> > convert time zones of the form "America/Chicago" to a value usable by
> > tz_offset. My OS (Mac OS X, Linux, Solaris) does consider TZ values of
> the
> > form "America/Chicago" to be valid:
>
> tz2zone was never intended to support named zones, it was intended to
> convert the likes of -0800 etc.
>
> I would suggest using DateTime::TimeZone to convert named timezones.
>
> Graham.
>
>
>
Migrated from rt.cpan.org#76968 (status was 'open')
Requestors:
From cary.millsap@method-r.com on 2012-05-03 17:31:02 :
From gbarr@pobox.com on 2012-05-03 17:38:42 :
From cary.millsap@method-r.com on 2012-05-03 17:52:04 :