diff --git a/README.md b/README.md
index 17639418..a6b5de75 100644
--- a/README.md
+++ b/README.md
@@ -455,10 +455,12 @@ var rule = new RRule(options)
 * * * * *
 
 ### Changelog
-
 * 2.1.0
    * Removed dependency on Underscore.js (thanks @gsf).
    * Various small bugfixes and improvements.
+   * Added Millisecond precision
+     * millisecond offset extracted ftom dtstart (dtstart.getTime()%1000)
+     * each reccurence is returned with the same offset
 * 2.0.1
    * Added bower.json.
 * 2.0.0 (2013-07-16)
diff --git a/lib/rrule.js b/lib/rrule.js
index bfb54789..a76bea4c 100644
--- a/lib/rrule.js
+++ b/lib/rrule.js
@@ -155,13 +155,12 @@ var dateutil = {
         time = time || date;
         return new Date(
             date.getFullYear(), date.getMonth(), date.getDate(),
-            time.getHours(), time.getMinutes(), time.getSeconds(), time.getSubSeconds()
+            time.getHours(), time.getMinutes(), time.getSeconds(), time.getMilliseconds()
         );
     },
 
     clone: function(date) {
         var dolly = new Date(date.getTime());
-        dolly.setMilliseconds(0);
         return dolly;
     },
 
@@ -221,11 +220,11 @@ var dateutil = {
 
 };
 
-dateutil.Time = function(hour, minute, second, sub_second) {
+dateutil.Time = function(hour, minute, second, millisecond) {
     this.hour = hour;
     this.minute = minute;
     this.second = second;
-    this.sub_second = sub_second || 0;
+    this.millisecond = millisecond || 0;
 };
 
 dateutil.Time.prototype = {
@@ -238,14 +237,14 @@ dateutil.Time.prototype = {
     getSeconds: function() {
         return this.second;
     },
-    getSubSeconds: function(){
-        return this.sub_second
+    getMilliseconds: function(){
+        return this.millisecond
     },
     getTime: function() {
         return ((this.hour * 60 * 60)
                  + (this.minute * 60)
                  + this.second)
-               * 1000 + this.sub_second;
+               * 1000 + this.millisecond;
     }
 };
 
@@ -506,7 +505,7 @@ var RRule = function(options, noCache) {
     if (!opts.dtstart) {
         opts.dtstart = new Date();
     }
-    var sub_second_mod = opts.dtstart.getTime()%1000;
+    var millisecondModulo = opts.dtstart.getTime()%1000;
     if (opts.wkst === null) {
         opts.wkst = RRule.MO.weekday;
     } else if (typeof opts.wkst == 'number') {
@@ -674,7 +673,7 @@ var RRule = function(options, noCache) {
                     // python:
                     // datetime.time(hour, minute, second,
                     // tzinfo=self._tzinfo))
-                    this.timeset.push(new dateutil.Time(hour, minute, second, sub_second_mod));
+                    this.timeset.push(new dateutil.Time(hour, minute, second, millisecondModulo));
                 }
             }
         }
@@ -1026,7 +1025,7 @@ RRule.prototype = {
         */
 
         var dtstart = this.options.dtstart,
-            dtstart_subsecond_mod= this.options.dtstart%1000;
+            dtstartMillisecondModulo= this.options.dtstart%1000;
 
         var
             year = dtstart.getFullYear(),
@@ -1085,7 +1084,7 @@ RRule.prototype = {
             {
                 timeset = [];
             } else {
-                timeset = gettimeset.call(ii, hour, minute, second, dtstart_subsecond_mod);
+                timeset = gettimeset.call(ii, hour, minute, second, dtstartMillisecondModulo);
             }
         }
 
@@ -1738,31 +1737,31 @@ Iterinfo.prototype.ddayset = function(year, month, day) {
     return [set, i, i + 1];
 };
 
-Iterinfo.prototype.htimeset = function(hour, minute, second, sub_second) {
+Iterinfo.prototype.htimeset = function(hour, minute, second, millisecond) {
     var set = [], rr = this.rrule;
     for (var i = 0; i < rr.options.byminute.length; i++) {
         minute = rr.options.byminute[i];
         for (var j = 0; j < rr.options.bysecond.length; j++) {
             second = rr.options.bysecond[j];
-            set.push(new dateutil.Time(hour, minute, second,sub_second));
+            set.push(new dateutil.Time(hour, minute, second,millisecond));
         }
     }
     dateutil.sort(set);
     return set;
 };
 
-Iterinfo.prototype.mtimeset = function(hour, minute, second,sub_second) {
+Iterinfo.prototype.mtimeset = function(hour, minute, second,millisecond) {
     var set = [], rr = this.rrule;
     for (var j = 0; j < rr.options.bysecond.length; j++) {
         second = rr.options.bysecond[j];
-        set.push(new dateutil.Time(hour, minute, second,sub_second));
+        set.push(new dateutil.Time(hour, minute, second,millisecond));
     }
     dateutil.sort(set);
     return set;
 };
 
-Iterinfo.prototype.stimeset = function(hour, minute, second,sub_second) {
-    return [new dateutil.Time(hour, minute, second,sub_second)];
+Iterinfo.prototype.stimeset = function(hour, minute, second,millisecond) {
+    return [new dateutil.Time(hour, minute, second,millisecond)];
 };
 
 
diff --git a/tests/utils.js b/tests/utils.js
index 72925913..cf68cbb3 100644
--- a/tests/utils.js
+++ b/tests/utils.js
@@ -54,7 +54,7 @@ var assertDatesEqual = function(actual, expected, msg) {
     }
 };
 
-var extract_time = function(date) {
+var extractTime = function(date) {
   return date != null ? date.getTime() : void 0;
 }
 var testRecurring = function(msg, rruleOrObj, expectedDates) {
@@ -93,7 +93,7 @@ var testRecurring = function(msg, rruleOrObj, expectedDates) {
 
         if(this.ALSO_TEST_SUBSECOND_PRECISION)
         
-            deepEqual( actualDates.map(extract_time), expectedDates.map(extract_time));
+            deepEqual( actualDates.map(extractTime), expectedDates.map(extractTime));
         if (this.ALSO_TEST_STRING_FUNCTIONS) {
             // Test toString()/fromString()
             var string = rrule.toString();