diff --git a/mozilla/calendar/resources/content/dayView.js b/mozilla/calendar/resources/content/dayView.js
index d384cce1157..beb8d1edfe9 100644
--- a/mozilla/calendar/resources/content/dayView.js
+++ b/mozilla/calendar/resources/content/dayView.js
@@ -356,12 +356,12 @@ DayView.prototype.addToDisplayList = function(itemOccurrence, startDate, endDate
     //startDate.jsDate is not
     var adjustedStartDate = new Date();
     var adjustedEndDate = new Date();
-    adjustedStartDate.setFullYear(startDate.year);
-    adjustedStartDate.setMonth(startDate.month);
     adjustedStartDate.setDate(startDate.day);
-    adjustedEndDate.setFullYear(endDate.year);
-    adjustedEndDate.setMonth(endDate.month);
+    adjustedStartDate.setMonth(startDate.month);
+    adjustedStartDate.setFullYear(startDate.year);
     adjustedEndDate.setDate(endDate.day);
+    adjustedEndDate.setMonth(endDate.month);
+    adjustedEndDate.setFullYear(endDate.year);
 
     // Check if the event is within the bounds of events to be displayed.
     if ((adjustedEndDate < this.displayStartDate) ||
diff --git a/mozilla/calendar/resources/content/monthView.js b/mozilla/calendar/resources/content/monthView.js
index fa03480ebd2..ffb42f0dadc 100644
--- a/mozilla/calendar/resources/content/monthView.js
+++ b/mozilla/calendar/resources/content/monthView.js
@@ -325,9 +325,9 @@ MonthView.prototype.createEventBoxInternal = function(itemOccurrence, startDate,
     //This is a HACK because startDate and indexOfDate don't get along well
     //in terms of timezones.
     var adjustedDate = new Date();
-    adjustedDate.setFullYear(startDate.year);
-    adjustedDate.setMonth(startDate.month);
     adjustedDate.setDate(startDate.day);
+    adjustedDate.setMonth(startDate.month);
+    adjustedDate.setFullYear(startDate.year);
     dayBoxItem = this.dayBoxItemArray[this.indexOfDate(adjustedDate)];
     if (!dayBoxItem)
         return;
diff --git a/mozilla/calendar/resources/content/multiweekView.js b/mozilla/calendar/resources/content/multiweekView.js
index 69568f60c3e..4a8cdc32f35 100644
--- a/mozilla/calendar/resources/content/multiweekView.js
+++ b/mozilla/calendar/resources/content/multiweekView.js
@@ -342,9 +342,9 @@ MultiweekView.prototype.createEventBoxInternal = function multiweekView_createEv
     //This is a HACK because startDate and indexOfDate don't get along well
     //in terms of timezones.
     var adjustedDate = new Date();
-    adjustedDate.setFullYear(startDate.year);
-    adjustedDate.setMonth(startDate.month);
     adjustedDate.setDate(startDate.day);
+    adjustedDate.setMonth(startDate.month);
+    adjustedDate.setFullYear(startDate.year);
     var DisplayDate = new Date(adjustedDate);
     dayBoxItem = this.dayBoxItemArray[this.indexOfDate(DisplayDate)];
     // Check if the day is visible
diff --git a/mozilla/calendar/resources/content/weekView.js b/mozilla/calendar/resources/content/weekView.js
index 9b81b5c388b..7445ae0a527 100644
--- a/mozilla/calendar/resources/content/weekView.js
+++ b/mozilla/calendar/resources/content/weekView.js
@@ -375,12 +375,12 @@ WeekView.prototype.createEventBoxInternal = function (event)
     //event.start.jsDate is not!
     var adjustedStartDate = new Date();
     var adjustedEndDate = new Date();
-    adjustedStartDate.setFullYear(startDate.year);
-    adjustedStartDate.setMonth(startDate.month);
     adjustedStartDate.setDate(startDate.day);
-    adjustedEndDate.setFullYear(endDate.year);
-    adjustedEndDate.setMonth(endDate.month);
+    adjustedStartDate.setMonth(startDate.month);
+    adjustedStartDate.setFullYear(startDate.year);
     adjustedEndDate.setDate(endDate.day);
+    adjustedEndDate.setMonth(endDate.month);
+    adjustedEndDate.setFullYear(endDate.year);
 
     // Check if the event is within the bounds of events to be displayed.
     if ((adjustedEndDate < this.displayStartDate) ||