This might work:
preg_match('/\d\d-[A-Z]{3}-\d\d \d\d:\d\d:\d\d [A-Z]{3}/i', $html, $match);
print_r($match);
Based on your comment, this will get all of the dates of that format:
preg_match_all('/\d\d-[A-Z]{3}-\d\d \d\d:\d\d:\d\d [A-Z]{3}/i', $html, $matches);
print_r($matches[0]);