diff --git a/framework/ActiveSync/lib/Horde/ActiveSync/Message/Base.php b/framework/ActiveSync/lib/Horde/ActiveSync/Message/Base.php
index 7a234005c68..03054d62140 100644
--- a/framework/ActiveSync/lib/Horde/ActiveSync/Message/Base.php
+++ b/framework/ActiveSync/lib/Horde/ActiveSync/Message/Base.php
@@ -563,15 +563,17 @@ protected function _formatDate(Horde_Date $dt, $type)
      *
      * @param string $ts  The timestamp
      *
-     * @return Horde_Date  The Horde_Date
+     * @return Horde_Date|boolean  The Horde_Date or false if unable to decode.
      */
     protected function _parseDate($ts)
     {
         if (preg_match("/(\d{4})[^0-9]*(\d{2})[^0-9]*(\d{2})(T(\d{2})[^0-9]*(\d{2})[^0-9]*(\d{2})(.\d+)?Z){0,1}$/", $ts, $matches)) {
-            return new Horde_Date($ts);
+            try {
+                return new Horde_Date($ts);
+            } catch (Horde_Date_Exception $e) {}
         }
 
-        throw new Horde_ActiveSync_Exception('Invalid date format');
+        return false;
     }
 
     /**
diff --git a/framework/ActiveSync/lib/Horde/ActiveSync/Message/Contact.php b/framework/ActiveSync/lib/Horde/ActiveSync/Message/Contact.php
index c791dd1f59c..3a95c4381a3 100644
--- a/framework/ActiveSync/lib/Horde/ActiveSync/Message/Contact.php
+++ b/framework/ActiveSync/lib/Horde/ActiveSync/Message/Contact.php
@@ -394,11 +394,13 @@ protected function _checkSendEmpty($tag)
      *
      * @param string $ts  The timestamp
      *
-     * @return Horde_Date  The Horde_Date object, in UTC.
+     * @return Horde_Date|boolean  The Horde_Date object (UTC) or false if
+     *     unable to parse the date.
      */
     protected function _parseDate($ts)
     {
         $date = parent::_parseDate($ts);
+
         // Since some clients send the date as YYYY-MM-DD only, the best we can
         // do is assume that it is in the same timezone as the user's default
         // timezone - so convert it to UTC and be done with it.