Keith Count down with server time

Keith jQuery Count down time working with server time with Ajax

Javascript  code

<script>
function serverTime() { 
    var time = null; 
    $.ajax({url: 'serverTime.php', 
        async: false, dataType: 'text', 
        success: function(text) { 
            time = new Date(text); 
        }, error: function(http, message, exc) { 
            time = new Date(); 
    }}); 
    return time; 
}

 $(document).ready(function () {
 
 
 
    $('#120').countdown({
        until: new Date(2014, 03 - 1, 30),
        format: 'DHMS',
  serverSync: serverTime
    });
});
</script>

PHP file

<?php
$now = new DateTime(null, new DateTimeZone('Asia/Kolkata'));
echo $now->format("M j, Y H:i:s O")."\n";
?>