title: Mongo to php date conversion
body: <p>In mongo collection, date is <code>"date" : ISODate("2013-01-20T18:30:00.000Z")</code>
  but when I convert it to readable format using <code>date('jS M, Y',$dataArr["date"]-&gt;sec)</code>, it shows me <code>21st Jan, 2013</code>. </p>
  
  <p>I am not able get the reason for change in date.Thanks in advance.</p>