| Subject: | Date arithmetics and DST |
| Date: | Wed, 18 Jun 2014 14:42:17 +0300 |
| To: | bug-Panda-Date [...] rt.cpan.org |
| From: | Sergey Leschenko <sergle.ua [...] gmail.com> |
Hi,
Issue observed: subtracting interval from date produces incorrect result if
crossing DST change.
use strict;
use warnings;
use Panda::Date;
sub p {
my $pdate = shift;
printf "%s tz:%s dst:%s epoch:%s\n",
$pdate->string, $pdate->tz->{name}, $pdate->isdst ? 'Y' : 'N',
$pdate->epoch;
};
#-- dst starts at 01:00
my $date = Panda::Date->new('2014-03-30 00:59:59');
$date->tz('Europe/London');
p($date);
my $delta = Panda::Date::Rel->new({sec => 1});
$date->add($delta);
p($date);
$date->subtract($delta);
p($date);
output:
2014-03-30 00:59:59 tz:Europe/London dst:N epoch:1396141199
2014-03-30 02:00:00 tz:Europe/London dst:Y epoch:1396141200
2014-03-30 02:59:59 tz:Europe/London dst:Y epoch:1396144799
I would expect value '2014-03-30 00:59:59' as a last result.
--
Sergey