For the record - we did it a really rubbish way (a js query every 60s)
<div class="section">
<div class="secondaryContent">
<h3>Server Time</h3><div id="time" style="text-align:center; font-size:33px"></div>
<script type="text/javascript">
function time() {
$('#time').load('time.php');
}...