title: How to convert ticks into a readable datetime with XSLT?
body: <p>I have an XML with timestamps like this:</p>
  
  <pre><code>&lt;node stamp="1236888746689" /&gt;
  </code></pre>
  
  <p>And I would like to display them in the result HTML as date with time.
  Is there a way to do it with XSLT (any Version)?</p>
  
  <p><strong>EDIT:</strong> 
  I am using XSLT2.0 with Saxon9. The base date is 1970-01-01 0:00.</p>