diff --git a/src/services/calendarHelper.js b/src/services/calendarHelper.js
index 93803440..d84fa2d0 100644
--- a/src/services/calendarHelper.js
+++ b/src/services/calendarHelper.js
@@ -314,7 +314,7 @@ angular
       var dayViewStartM = moment(dayViewStart || '00:00', 'HH:mm');
       var dayViewEndM = moment(dayViewEnd || '23:59', 'HH:mm');
       var hourHeight = (60 / dayViewSplit) * 30;
-      return ((dayViewEndM.diff(dayViewStartM, 'hours') + 1) * hourHeight) + 2;
+      return ((dayViewEndM.diff(dayViewStartM, 'minutes') / 60) * hourHeight) + 3;
     }
 
     function loadTemplates() {
diff --git a/test/unit/services/calendarHelper.spec.js b/test/unit/services/calendarHelper.spec.js
index 362897e6..a5289fc4 100644
--- a/test/unit/services/calendarHelper.spec.js
+++ b/test/unit/services/calendarHelper.spec.js
@@ -586,15 +586,17 @@ describe('calendarHelper', function() {
   });
 
   describe('getDayViewHeight', function() {
-    var dayViewHeight;
 
-    beforeEach(function() {
-      dayViewHeight = calendarHelper.getDayViewHeight('01:00', '22:59', 10);
+    it('should calculate the height of the day view', function() {
+      var dayViewHeight = calendarHelper.getDayViewHeight('01:00', '22:59', 10);
+      expect(dayViewHeight).to.equal(3960);
     });
 
-    it('should calculate the height of the day view', function() {
-      expect(dayViewHeight).to.equal(3962);
+    it('should support partial hours', function() {
+      var dayViewHeight = calendarHelper.getDayViewHeight('01:00', '22:29', 10);
+      expect(dayViewHeight).to.equal(3870);
     });
+
   });
 
   describe('getWeekViewWithTimes', function() {