title: How to convert a UTC date to NSDate?
body: <p>I have a string that is UTC and would like to convert it to an NSDate. </p>
  
  <pre><code>static NSDateFormatter* _twitter_dateFormatter;
  [_twitter_dateFormatter setFormatterBehavior:NSDateFormatterBehaviorDefault];
  [_twitter_dateFormatter setDateFormat:@"EEE MMM dd HH:mm:ss ZZZ yyyy"];
  [_twitter_dateFormatter setLocale:_en_us_locale];
  
  NSDate *d = [_twitter_dateFormatter dateFromString:sDate];
  </code></pre>
  
  <p>When I go through the debugger d is nil even though sDate is "2010-03-24T02:35:57Z" </p>
  
  <p>Not exactly sure what I'm doing wrong.</p>