1<?xml version="1.0"?> 2<page> 3 <!-- valid xs:date --> 4 <date date="0001-12-31Z"/> 5 <date date="3000-01-31"/> 6 <date date="2000-02-29"/> 7 <date date="9990001-12-31Z"/> 8 <date date="-0004-02-29"/> 9 <date date="1999-01-02"/> 10 <date date="1999-01-03"/> 11 <date date="2004-01-01"/> 12 <date date="2006-01-01"/> 13 <date date="2007-12-31"/> 14</page> 15