title: NSDateFormatter time zone abbreviation
body: <p>I need to recognize date strings like <code>Tue Aug 13 17:29:20 MSK 2013</code>. And, as I know, to do that I need to use 'V' symbol in NSDateFormmater, but it only recognizes <code>GMT+04:00</code> like time zones. Is there any other way to parse time zone abbreviation?</p>
  
  <p>Here is the code:</p>
  
  <pre><code>  NSDateFormatter *dft = [[NSDateFormatter alloc] init];
    [dft setDateFormat:@"EEE MMM dd HH:mm:ss V yyyy"];
    NSLog(@"%@", [dft stringFromDate:[NSDate date]]);
    NSLog(@"%@", [dft dateFromString:@"Tue Aug 13 17:29:20 MSK 2013"]);
  </code></pre>
  
  <p>Output:</p>
  
  <pre><code>Tue Aug 13 17:37:41 GMT+04:00 2013
  (null)
  </code></pre>
  
  <p>With <code>NSLog(@"%@", [dft dateFromString:@"Tue Aug 13 17:29:20 GMT+04.00 2013"])</code> output is fine.</p>