diff --git a/lib/backburner/index.js b/lib/backburner/index.js
index 1710742e..11e05bc0 100644
--- a/lib/backburner/index.js
+++ b/lib/backburner/index.js
@@ -3,7 +3,8 @@ import {
   isString,
   isFunction,
   isNumber,
-  isCoercableNumber
+  isCoercableNumber,
+  now
 } from './utils';
 
 import searchTimer from './binary-search';
@@ -379,7 +380,7 @@ Backburner.prototype = {
       }
     }
 
-    var executeAt = Date.now() + parseInt(wait !== wait ? 0 : wait, 10);
+    var executeAt = now() + parseInt(wait !== wait ? 0 : wait, 10);
 
     if (isString(method)) {
       method = target[method];
@@ -586,7 +587,7 @@ Backburner.prototype = {
   },
 
   _scheduleExpiredTimers: function () {
-    var n = Date.now();
+    var n = now();
     var timers = this._timers;
     var i = 0;
     var l = timers.length;
@@ -621,7 +622,7 @@ Backburner.prototype = {
       return;
     }
     var minExpiresAt = this._timers[0];
-    var n = Date.now();
+    var n = now();
     var wait = Math.max(0, minExpiresAt - n);
     this._timerTimeoutId = this._platform.setTimeout(this._boundRunExpiredTimers, wait);
   }
diff --git a/lib/backburner/utils.js b/lib/backburner/utils.js
index c12788c5..6a979a21 100644
--- a/lib/backburner/utils.js
+++ b/lib/backburner/utils.js
@@ -1,5 +1,7 @@
 var NUMBER = /\d+/;
 
+export var now = Date.now;
+
 export function each(collection, callback) {
   for (var i = 0; i < collection.length; i++) {
     callback(collection[i]);