<?xml version="1.0"?>
<page>
  <!-- invalid duration syntax -->
  <date duration="P10H"/>
  <date duration="P-T10D"/>
  <date duration="PT-10D"/>
  <date duration="--PT10H"/>
  <date duration="PYT0.00001S"/>
  <date duration="PT49.00001"/>
  <date duration="P0Y0MDT10H10M10.09S"/>
  <!-- invalid date/time type -->
  <date duration="--10-29"/>
  <date duration="---29"/>
  <date duration="10:31:07"/>
  <!-- invalid duration values for date:seconds -->
  <!-- years and months are not handled by date:seconds() -->
  <date duration="P10Y20M100DT40H61M100S"/>
  <date duration="P10000Y"/>
</page>

