for ('02'..'03') {
    my $month = $_;
    $bucket{$month} = ();
    for ('00' .. $mons{$month}) {
        my $day = $_;
        $bucket{$month}{$day} = ();
        for ('00' .. '24') {
            my $hour = $_;
            $bucket{$month}{$day}{$hour} = ();
            for ('00' .. '59') {
                my $minute = $_;
                $bucket{$month}{$day}{$hour}{$minute} = [0,0];
            }
        }
    }
}