<?xml version="1.0"?>
<page>
  <!-- invalid xs:date syntax -->
  <date date="-1-01-31"/>
  <date date="+1-01-31"/>
  <!-- invalid xs:date values -->
  <date date="0001-12-32Z"/>
  <date date="0001-13-01"/>
  <date date="0001-11-00"/>
</page>