changing time in default signature

["Dave" <dmehler26@xxxxxxxxxx>]

Hello,
   I'm running squid 2.5.12 on a freebsd6 box. It is working great thus 
far, though i'm going to be adding porn and popup blocks with redirectors. 
My major question is i want to change the default signature delivered for 
error pages. I read the faq and it indicated that squid uses %T for gmt i 
definitely want to change this to my local time zone using %t. I've found 
the specific error message template to change the access denied one, but i 
don't see a %T indicator, or where it hooks in to the default signature. I 
was hoping to edit only the default signature file so changes would be 
reflected across all the template files without having to manually edit 
them, but i don't see where this file is. I'm sure what i want to do is 
simple, however i would appreciate a pointer.
Thanks.
Dave.