title: return nil for dateFromString call of NSDateFormatter
body: <p>I am getting nil returned for the date variable in the below code. I can't find any problem with the date format, can anyone help?</p>
  
  <pre><code>NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
  [formatter setDateFormat:@"EEE MMM dd HH:mm:ss zzz yyyy"];
  
  NSString *dateString = [[NSString alloc] initWithFormat:@"%@", @"Mon Apr 05 04:37:28 UTC 2010"];
  NSDate *date = [formatter dateFromString:dateString];
  </code></pre>