diff --git a/configure/CONFIG_SITE_ENV b/configure/CONFIG_SITE_ENV
index fa1f51755..d1635c5e4 100644
--- a/configure/CONFIG_SITE_ENV
+++ b/configure/CONFIG_SITE_ENV
@@ -32,11 +32,15 @@
 # EPICS_TIMEZONE=<name>::<minutesWest>:<start daylight>:<end daylight>
 #NOTE: start and end are mmddhh that bis mounth,day,hour
 # eg EPICS_TIMEZONE=CUS::360:033102:102802
-#  DST for 2003  US: Apr  6 - Oct 26
-#                EU: Mar 30 - Oct 26
+#
+#  DST for 2004  US: Apr  4 - Oct 31
+#                EU: Mar 28 - Oct 31
+#  (see: http://www.worldtimezone.org/daylight.html)
+#
 # EPICS_TS_NTP_INET ntp or Unix time server ip addr.
 
-EPICS_TIMEZONE=CUS::360:040602:102602
+EPICS_TIMEZONE=CUS::360:040402:103102
+#EPICS_TIMEZONE=MET::-60:032802:103102
 EPICS_TS_NTP_INET=