import re

regex = r"Date: (\d{1,2}\/\d{1,2}\/\d{4} \d{1,2}:\d{2} [AP]M)"

test_str = ("1) Subject: FW: NEFS 11 fish for lease\n"
	"   From: Claire Fitz-Gerald \n"
	"   Date: 11/15/2013 3:02 PM\n\n"
	"2) Subject: FW: NEFS 11 and 12 fish for lease\n"
	"   From: Claire Fitz-Gerald \n"
	"   Date: 11/11/2013 4:09 PM\n\n"
	"3) Subject: FW: NEFS 11 fish for lease\n"
	"   From: Claire Fitz-Gerald \n"
	"   Date: 12/5/2013 4:23 PM")

matches = re.finditer(regex, test_str)

for matchNum, match in enumerate(matches):
    matchNum = matchNum + 1
    
    for groupNum in range(0, len(match.groups())):
        groupNum = groupNum + 1
        
        print ("Group found : {group}".format( group = match.group(groupNum)))