title: Date format in Dart which includes GMT
body: <p>How do I convert my current time into GMT/ UTC time in Dart, similar to the javascript way: <code>new Date().toUTCString()</code>:</p>
  <blockquote>
  <p>Tue, 01 Nov 2011 19:06:35 GMT</p>
  </blockquote>
  <p>I tried couple of formatters see below but it did not work</p>
  <pre><code>//var f = DateFormat('E, d MMM yyyy HH:mm:ss z');
  var f = DateFormat('E, d MMM yyyy HH:mm:ss'); 
      var date = f.format(DateTime.now());
  
  </code></pre>