--- loncom/interface/loncommon.pm	2001/10/26 17:09:04	1.7
+++ loncom/interface/loncommon.pm	2001/10/26 17:29:28	1.8
@@ -8,6 +8,7 @@
 package Apache::loncommon;
 
 use strict;
+use POSIX qw(strftime);
 use Apache::Constants qw(:common);
 use Apache::lonmsg();
 
@@ -71,7 +72,7 @@ sub get_unprocessed_cgi {
 }
 
 sub cacheheader {
-  my $date=localtime;
+  my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
   my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
                 <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
                 <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';