<?xml version="1.0"?>
<page>
  <!-- valid xs:dateTime -->
  <date date="2001-02-28T10:31:07"/>
  <date date='0001-12-31T23:59:59.1234-05:00'/>
  <date date='-0001-12-31T23:59:59-05:00'/>
  <date date='10000-12-31T23:59:59.9901Z'/>
  <date date='-10000-12-31T23:59:59Z'/>
</page>