--- ./include/class.date.php~	2005-02-15 23:50:44.000000000 +0200
+++ ./include/class.date.php	2005-02-18 00:34:59.000000000 +0200
@@ -43,7 +43,9 @@
 include_once(APP_INC_PATH . "class.prefs.php");
 include_once(APP_PEAR_PATH . "Date.php");
 
-define('APP_DEFAULT_TIMEZONE', 'UTC');
+if (!defined('APP_DEFAULT_TIMEZONE')) {
+    define('APP_DEFAULT_TIMEZONE', 'UTC');
+}
 define("SECOND", 1);
 define("MINUTE", SECOND * 60);
 define("HOUR", MINUTE * 60);