#!/usr/bin/perl
use strict;
use warnings;

use DateTime;
use DateTime::Event::Recurrence;
use DateTime::Format::Strptime;

my $strp = DateTime::Format::Strptime->new(
					pattern => '%Y-%m-%d %T',
        );
my $datf = qq{2012-01-01 04:00:00};
my $datt = qq{2012-01-02 23:00:00};
		
my $start = $strp->parse_datetime($datf);
my $end = $strp->parse_datetime($datt);

my $day_set = DateTime::Event::Recurrence->daily(
						hours => [7, 22], 
);

my $it = $day_set->iterator
			(
			start  => $start->truncate(to=>"hour"),
			before => $end->truncate(to=>"hour"),
			);
								
while ( my $dt = $it->next() )
{
	print $dt->datetime(), "\n";
}

##</code><code>##

2012-01-01T07:00:00
2012-01-01T22:00:00
2012-01-02T07:00:00
2012-01-02T22:00:00

##</code><code>##

2012-01-01T08:00:00
2012-01-01T09:00:00
2012-01-01T10:00:00
2012-01-01T11:00:00
2012-01-01T12:00:00
2012-01-01T13:00:00
2012-01-01T14:00:00
2012-01-01T15:00:00
2012-01-01T16:00:00
2012-01-01T17:00:00
2012-01-01T18:00:00
2012-01-01T19:00:00
2012-01-01T20:00:00
2012-01-01T21:00:00
2012-01-01T22:00:00
2012-01-02T08:00:00
2012-01-02T09:00:00
2012-01-02T10:00:00
2012-01-02T11:00:00
2012-01-02T12:00:00
2012-01-02T13:00:00
2012-01-02T14:00:00
2012-01-02T15:00:00
2012-01-02T16:00:00
2012-01-02T17:00:00
2012-01-02T18:00:00
2012-01-02T19:00:00
2012-01-02T20:00:00
2012-01-02T21:00:00
2012-01-02T22:00:00