title: new Date(..).getTime() is not equal to moment(..).valueOf() in momentJS?
body: <p><code>new Date(..).getTime()</code> should return a timestamp in milliseconds. According to the <a href="http://momentjs.com/docs/#/displaying/unix-offset/" rel="noreferrer">documentation of momentJS</a> the expression <code>moment(..).valueOf()</code> should do the same <em>(return timestamp in milliseconds for a given date)</em>.</p>
  
  <p>I checked with the following example data:</p>
  
  <pre><code>var timeStampDate = new Date("2015-03-25").getTime(); //timestamp in milliseconds?
  &gt; 1427241600000
  var timeStampMoment = moment("03-25-2015", "MMDDYYYY").valueOf(); //timestamp in milliseconds?
  &gt; 1427238000000
  </code></pre>
  
  <p>As you can see the results were not the same. </p>
  
  <p>Now I'm searching for a function in <strong>momentJS</strong> that returns to me the exact same data that the expression <code>new Date(..).getTime()</code>.</p>