Index: themes/default/header.php
===================================================================
--- themes/default/header.php	(revision 9655)
+++ themes/default/header.php	(working copy)
@@ -15,6 +15,8 @@
 // UTF-8 content
     header("Content-Type: text/html; charset=utf-8");
 
+    if (time_zone != '')
+        putenv('TZ='.time_zone);
 ?>
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html>
Index: themes/wap/header.php
===================================================================
--- themes/wap/header.php	(revision 9655)
+++ themes/wap/header.php	(working copy)
@@ -15,6 +15,8 @@
 // UTF-8 content
     header("Content-Type: text/html; charset=utf-8");
 
+    if (time_zone != '')
+        putenv('TZ='.time_zone);
 ?>
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
Index: config/conf.php
===================================================================
--- config/conf.php	(revision 9655)
+++ config/conf.php	(working copy)
@@ -16,6 +16,10 @@
  *
 /**/
 
+// The time zone of this webserver. You generally only need to set this if you
+// live in an area that does not observe daylight savings time.
+    define('time_zone', '');
+
 // The domain of this webserver, for cookie validation and other things.  This
 //  *should* work automatically as-is, but if cookies don't work, you may need
 //  to manually set this to the full domain name of this server.
