 <p>Looks fine too me. Why don't you try to use a DURATION (<a href="http://tools.ietf.org/html/rfc5545#section-3.8.2.5" rel="nofollow">RFC5545#section-3.8.2.5</a>) instead of a DTEND, e.g.</p> <pre><code>DURATION:PT1H </code></pre> <p>for a 1 hour event.</p>