public function getInvalidTimes() {
return array(
array(
'foobar',
),
array(
'foobar 12:34:56',
),
array(
'12:34:56 foobar',
),
array(
'00:00',
),
array(
'24:00:00',
),
array(
'00:60:00',
),
array(
'00:00:60',
),
);
}