title: convert NSString to NSDate
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1353081/nsstring-to-nsdate">NSString to NSDate</a>  </p>
  </blockquote>
  
  
  
  <p>Hi I want to convert the string "<code>OCT 1, 2011 18:30</code>" into <code>NSDate</code> format <code>2011-05-13 19:00:00 +0800.</code>
  I have tried with the many formatters but what I am getting is a null value each time. 
  Can any body help me on this?</p>