Index: DateTime.py
===================================================================
--- DateTime.py	(revision 82272)
+++ DateTime.py	(working copy)
@@ -113,11 +113,11 @@
     if not daylight:
         # Daylight savings does not occur in this time zone.
         isDST = 0
-    try:
+    if False:
         # Get the name of the current time zone depending
         # on DST.
         _localzone = _cache._zmap[tzname[isDST].lower()]
-    except:
+    else:
         try:
             # Generate a GMT-offset zone name.
             if isDST: