title: ISO 8601 Repeating Interval
body: <p>Wikipedia gives an example of an <a href="http://en.wikipedia.org/wiki/ISO_8601" rel="noreferrer">ISO 8601</a> example of a <a href="http://en.wikipedia.org/wiki/ISO_8601#Repeating_intervals" rel="noreferrer">repeating interval</a>:</p>
  
  <pre><code>R5/2008-03-01T13:00:00Z/P1Y2M10DT2H30M
  </code></pre>
  
  <p>This is what this means:</p>
  
  <ul>
  <li><code>R5</code> means that the interval after the slash is repeated 5 times.</li>
  <li><code>2008-03-01T13:00:00Z</code> means that the interval begins at this given datetime.</li>
  <li><code>P1Y2M10DT2H30M</code> means that the interval lasts for
  <ul>
  <li>1 year</li>
  <li>2 months</li>
  <li>10 days</li>
  <li>2 hours</li>
  <li>30 minutes</li>
  </ul></li>
  </ul>
  
  <p>My problem is that I do not know exactly what is being repeated here.  Does the repetition
  occur immediately after the interval ends? Can I specify that every Monday something happens from 13:00 to 14:00?</p>