<!DOCTYPE html>
<html>
<body>
<p>I had the best date on <time id="myTime" datetime="2014-02-14T08:00Z">Valentines day</time>.</p>
<p>Click the button to change the value of the datetime attribute of the time element above.</p>
<button onclick="myFunction()">Try it</button>
<p><b>Note:</b> The time element does not render as anything special in any of the major browsers.</p>
<p><b>Note:</b> The dateTime property is only supported in Firefox and Opera 12.</p>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myTime").dateTime = "1999-06-24T09:30Z";
document.getElementById("demo").innerHTML = "The date and time was changed from '2014-02-14T08:00Z' to '1999-06-24T09:30Z'.";
}
</script>
</body>
</html>