title: Same date in different time zone
body: <p>My question is how can I get the same day, month, year, hour, minutes, seconds in a different time zone, for example:</p>
  
  <pre><code>var now = moment().valueOf();
  var result1 = moment(now).format('DD-MM-YYYY HH:mm:SS Z');
  </code></pre>
  
  <p>In my time zone I get some this like this:</p>
  
  <pre><code>18-02-2015 21:08:34 +01:00
  </code></pre>
  
  <p>So how can I change only time zone without changing other values (days, months, ..., minutes, ...)</p>
  
  <p>I want to get some thing like this:</p>
  
  <pre><code>    result2: 18-02-2015 21:08:34 +01:00
      result3: 18-02-2015 21:08:34 +10:00
      result4: 18-02-2015 21:08:34 +05:00
      result5: 18-02-2015 21:08:34 -06:00
      result6: 18-02-2015 21:08:34 -11:00
  </code></pre>
  
  <p>Thanks in advance</p>