Cookies

Response Headers status:

HTTP/1.1 200 OK
date Fri, 20 Dec 2013 15:44:32 GMT
server Apache x-powered-by PHP/5.2.17
set-cookie startView=1387554272 ; expires=Sat, 21-Dec-2013 15:44:32 GMT; path=/
expires Thu, 19 Nov 1981 08:52:00 GMT
cache-control max-age=60, public pragma no-cache
content-encoding gzip
vary Accept-Encoding
content-length 4286
connection close
content-type text/html
Pessoal como modifico o expires a minha pagina expira em Thu, 19 Nov 1981
08:52:00 GMT?