+-- |Parse an HTTP Date and Time.
+--
+-- Limitation: RFC 2616 (HTTP\/1.1) says we must accept these three
+-- formats:
+--
+-- * @Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123@
+--
+-- * @Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036@
+--
+-- * @Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format@
+--
+-- ...but currently this function only supports the RFC 1123
+-- format. This is a violation of RFC 2616 so this should be fixed
+-- later. What a bother!