title: How I can set a date string from twitter to a NSDATE
body: <p>The date you get back from twitter is in this format <code>Fri Aug 07 12:40:04 +0000 2009</code>. I am able to assign the value to a NSDate without issue. However, when I attempt to use NSDateFormatter, I get a nil returned to me. What am I missing?</p>
  
  <pre><code>    NSDate *createdAt = [messageData objectForKey:@"created_at"];
      NSDateFormatter *format = [[NSDateFormatter alloc] init];
      [format setDateFormat:@"M/d/yy HH:mm"];
  
      NSString *dateString = [format stringFromDate:createdAt];
  
  
      label.text = dateString;
  </code></pre>