diff --git a/SOPE/NGCards/ChangeLog b/SOPE/NGCards/ChangeLog
index b74626387..a6663c5df 100644
--- a/SOPE/NGCards/ChangeLog
+++ b/SOPE/NGCards/ChangeLog
@@ -1,5 +1,10 @@
 2010-03-09  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* iCalTimeZone.m (-periodForDate:): the order in which daylight
+	and standard occur is not the same in the northern and southern
+	hemisphere. We were thus choosing the wrong period for southern
+	areas.
+
 	* iCalTimeZonePeriod.m (_occurenceForDate:byRRule:): fixed
 	computing of timezone switch dates, which were offset by one week
 	too early.
diff --git a/SOPE/NGCards/iCalTimeZone.m b/SOPE/NGCards/iCalTimeZone.m
index be82b997c..9de729ff5 100644
--- a/SOPE/NGCards/iCalTimeZone.m
+++ b/SOPE/NGCards/iCalTimeZone.m
@@ -166,13 +166,26 @@ static NSMutableDictionary *cache;
     period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"daylight"];
   else if (!daylightOccurence)
     period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"standard"];
-  else if ([date earlierDate: daylightOccurence] == date
-	   || [date earlierDate: standardOccurence] == standardOccurence)
-    period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"standard"];
+  else if ([date earlierDate: daylightOccurence] == date)
+    {
+      if ([date earlierDate: standardOccurence] == date
+          && ([standardOccurence earlierDate: daylightOccurence]
+              == standardOccurence))
+        period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"daylight"];
+      else
+        period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"standard"];
+    }
   else
-    period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"daylight"];
+    {
+      if ([standardOccurence earlierDate: date] == standardOccurence
+          && ([daylightOccurence earlierDate: standardOccurence]
+              == daylightOccurence))
+        period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"standard"];
+      else
+        period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"daylight"];
+    }
 
-//   NSLog (@"chosen period: '%@'", [period tag]);
+  // NSLog (@"chosen period: '%@'", [period tag]);
 
   return period;
 }