diff --git a/bower.json b/bower.json
index 21193ee..6c82ed7 100644
--- a/bower.json
+++ b/bower.json
@@ -1,27 +1,27 @@
 {
-  "name": "angular-ui-calendar",
-  "version": "0.9.0-beta.1",
-  "description": "A complete AngularJS directive for the Arshaw FullCalendar.",
-  "author": "https://github.com/angular-ui/ui-calendar/graphs/contributors",
-  "license": "MIT",
-  "homepage": "http://angular-ui.github.com",
-  "main": "./src/calendar.js",
-  "ignore": [
-    "**/.*",
-    "node_modules",
-    "bower_components",
-    "test*",
-    "demo*",
-    "gruntFile.js",
-    "package.json"
-  ],
-  "dependencies": {
-    "angular": "~1.2.x",
-    "fullcalendar": "~2.x"
-  },
-  "devDependencies": {
-    "angular-mocks": "~1.x",
-    "bootstrap-css": "2.3.1",
-    "jquery-ui": "~1.10.3"
-  }
+	"name" : "angular-ui-calendar",
+	"version" : "0.9.0-beta.1",
+	"description" : "A complete AngularJS directive for the Arshaw FullCalendar.",
+	"author" : "https://github.com/angular-ui/ui-calendar/graphs/contributors",
+	"license" : "MIT",
+	"homepage" : "http://angular-ui.github.com",
+	"main" : "./src/calendar.js",
+	"ignore" : [
+		"**/.*",
+		"node_modules",
+		"bower_components",
+		"test*",
+		"demo*",
+		"gruntFile.js",
+		"package.json"
+	],
+	"dependencies" : {
+		"angular" : "~1.3.x",
+		"fullcalendar" : "~2.x"
+	},
+	"devDependencies" : {
+		"angular-mocks" : "~1.x",
+		"bootstrap-css" : "2.3.1",
+		"jquery-ui" : "~1.10.3"
+	}
 }
diff --git a/src/calendar.js b/src/calendar.js
index 89abc17..6baf384 100644
--- a/src/calendar.js
+++ b/src/calendar.js
@@ -38,10 +38,10 @@ angular.module('ui.calendar', [])
 
       this.eventsFingerprint = function(e) {
         if (!e._id) {
-          e._id = eventSerialId++;
+          e._id = e.id ? e.id : ('ui-calendar' + ( eventSerialId++ ));//Search for event 'id' in the passed event object and assign if defined else assign generated id.
         }
         // This extracts all the information we need from the event. http://jsperf.com/angular-calendar-events-fingerprint/3
-        return "" + e._id + (e.id || '') + (e.title || '') + (e.url || '') + (+e.start || '') + (+e.end || '') +
+        return "" + e._id + (e.id || '') + (e.title || '') + (e.url || '') + (e.start?(e.start._i||e.start): '') + (e.end?(e.end._i||e.end) : '') +
           (e.allDay || '') + (e.className || '') + extraEventSignature(e) || '';
       };