title: XSLT: Getting the latest date
body: <p>I have a structure like this:</p>
  
  <pre><code>  &lt;Info ID="1"&gt;
      ...
      &lt;Date&gt;2009-04-21&lt;/Date&gt;
    &lt;/Info&gt;
    &lt;Info ID="2"&gt;
      ...
      &lt;Date&gt;2009-04-22&lt;/Date&gt;
    &lt;/Info&gt;
    &lt;Info ID="3"&gt;
      ...
      &lt;Date&gt;2009-04-20&lt;/Date&gt;
    &lt;/Info&gt;
  </code></pre>
  
  <p>I want to get the latest date using XSLT (in this example - 2009-04-22).</p>