$line = "YYYY-MM-DD\t17:01:00\ttext\t123.456.789.123\t123.456.789.123\tURL\tNUMBER\tNUMBER";

$line =~ /.*?\t(\d\d):(\d\d):(\d\d)/;
$time = $1*3600 + $2*60 + $3;
if ($time >= 31500 && $time <= 43200 || $time <= 7200 || $time >= 61200) {
    print "It's a match.";
}