In HTTP/1.1, valid dates come in 3 forms (per
http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3.1) :
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
All 3 fail in Pharo 1.4 with #asDateAndTime.
It'd be easy enough to write a parser for them, but it seems so common... I searched google and the seaside lists but found no mention of "date parse HTTP".
Cheers,
Sean