Bug #13221 for DateTime: Date add returns wron result when timezone is set.

Mon Jun 13 07:20:47 2005 Guest - Ticket created

Subject:

Date add returns wron result when timezone is set.

perl -e 'use DateTime; $a = DateTime->new( year=>2005,month=>3,day=>1,time_zone=>"Europe/Berlin" ); print $a."\n";$a->add( "months"=>1 ); print $a."\n";' returns 2005-03-01T00:00:00 2005-03-29T01:00:00 but one month from 1st march is 1st april.

Mon Aug 15 15:41:39 2005 Guest - Correspondence added

[guest - Mon Jun 13 07:20:47 2005]: Show quoted text

> perl -e 'use DateTime; $a = DateTime->new( > year=>2005,month=>3,day=>1,time_zone=>"Europe/Berlin" ); print > $a."\n";$a->add( "months"=>1 ); print $a."\n";' > > returns > > 2005-03-01T00:00:00 > 2005-03-29T01:00:00 > > but one month from 1st march is 1st april.

I think that's because you've crossed a daylight savings time boundary. Convert to UTC do the calculation, and convert back

Mon Aug 15 15:45:30 2005 autarch [...] urth.org - Correspondence added

Date:	Mon, 15 Aug 2005 14:45:07 -0500 (CDT)
From:	Dave Rolsky <autarch [...] urth.org>
To:	Guest via RT <bug-DateTime [...] rt.cpan.org>
Subject:	Re: [cpan #13221] Date add returns wron result when timezone is set.
RT-Send-Cc:

On Mon, 15 Aug 2005, Guest via RT wrote: Show quoted text

>> 2005-03-01T00:00:00 >> 2005-03-29T01:00:00 >> >> but one month from 1st march is 1st april.

> > I think that's because you've crossed a daylight savings time boundary. > Convert to UTC do the calculation, and convert back

I'm planning some API changes/new API bits that should address this for the next major release. /*=================================================== VegGuide.Org www.BookIRead.com Your guide to all that's veg. My book blog ===================================================*/

Fri Jan 13 00:26:55 2006 DROLSKY [...] cpan.org - Status changed from 'new' to 'resolved'

Bug #13221 for DateTime: Date add returns wron result when timezone is set.

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