while (<>){
	if(/(
		[0-3]?[0-9](?:th|st|nd|rd)?\s+
		
		(?:Jan(uary)?|Feb(ruary)?|Mar(ch)?|Apr(il)?|May|Jun(e)?|
		
		Jul(y)?|Aug(ust)?|Sep(tember)?|Oct(ober)?|Nov(ember)?|Dec(ember?))\s+
		
		[0-9]?[0-9]?[0-9][0-9])
		
		/ix) {
	print "$1\n";
	}
}