import re
text = "21 September 2010"
months = ("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December")
pattern = r"^\d{{2}} +(?:{}) +\d{{4}}$".format("|".join(months))
match = re.search(pattern, text)
if match:
fdate = match.group(0)
print(fdate)
aW1wb3J0IHJlCnRleHQgPSAiMjEgU2VwdGVtYmVyIDIwMTAiCm1vbnRocyA9ICgiSmFudWFyeSIsICJGZWJydWFyeSIsICJNYXJjaCIsICJBcHJpbCIsICJNYXkiLCAiSnVuZSIsICJKdWx5IiwgIkF1Z3VzdCIsICJTZXB0ZW1iZXIiLCAiT2N0b2JlciIsICJOb3ZlbWJlciIsICJEZWNlbWJlciIpCnBhdHRlcm4gPSByIl5cZHt7Mn19ICsoPzp7fSkgK1xke3s0fX0kIi5mb3JtYXQoInwiLmpvaW4obW9udGhzKSkKbWF0Y2ggPSByZS5zZWFyY2gocGF0dGVybiwgdGV4dCkKaWYgbWF0Y2g6CiAgICBmZGF0ZSA9IG1hdGNoLmdyb3VwKDApCiAgICBwcmludChmZGF0ZSk=