The date validation is a very flexible validation type: using the format string you can specify any date format, whether you need ANSI, ISO format, a time, date or both in any order and using any kind of separator.
Below are the dumps of some PHP variables - submit the form to see the changes!
Contents of the $_POST array:
$_POST = array (
)
Results of a $clonefish->getElementValues() call: array ( 'fulldateiso' => '2008-11-21', 'fulldate' => '11/21/2008', 'fulltime' => '2008-11-21 22:01:46', 'id' => 'validdate', )