title: Convert datetime string to UTC in JavaScript
body: <p>How can we convert datetime string to UTC in javascript. We are getting following JSON from REST service</p>
  
  <pre><code>[  
     {  
        "CreationTime":"June 2, 2015 8:04:53 PM IST",
        "category":"UI",
        "severity":"MAJOR",
        "source":"BILLING",
        "status":"ASSIGNED"
     }
  ]
  </code></pre>
  
  <p>we are able to get <code>CreationTime</code> into a String variable but unable to convert to UTC.  Any idea to convert this?</p>