title: ZonedDateTime to UTC with offset applied?
body: <p>I am using <code>Java 8</code><br>
  This is what my <code>ZonedDateTime</code> looks like  </p>
  
  <pre><code>2013-07-10T02:52:49+12:00
  </code></pre>
  
  <p>I get this value as  </p>
  
  <pre><code>z1.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME)
  </code></pre>
  
  <p>where <code>z1</code> is a <code>ZonedDateTime</code>.</p>
  
  <p>I wanted to convert this value as <code>2013-07-10T14:52:49</code></p>
  
  <p>How can I do that?</p>