diff --git a/reference/datetime/datetime/construct.xml b/reference/datetime/datetime/construct.xml
index 6993474f68..619a41dcbf 100644
--- a/reference/datetime/datetime/construct.xml
+++ b/reference/datetime/datetime/construct.xml
@@ -139,6 +139,10 @@ echo $date->format('Y-m-d H:i:sP') . "\n";
 // Using a UNIX timestamp.  Notice the result is in the UTC time zone.
 $date = new DateTime('@946684800');
 echo $date->format('Y-m-d H:i:sP') . "\n";
+
+// Non-existant values roll over.
+$date = new DateTime('2000-02-30');
+echo $date->format('Y-m-d H:i:sP') . "\n";
 ?>
 ]]>
    </programlisting>
@@ -150,6 +154,7 @@ echo $date->format('Y-m-d H:i:sP') . "\n";
 2010-04-24 10:24:16-04:00
 2010-04-25 02:24:16+12:00
 2000-01-01 00:00:00+00:00
+2000-03-01 00:00:00-05:00
 ]]>
    </screen>
   </example>