You can verify your own web pages with a little bit of javascript
<script type="text/javascript" language="JavaScript" src="lastupdated.js"></script>
<script type="text/javascript" language="JavaScript">
<!-- Write last modified date at the bottom of the page
var dateObj = new Date(document.lastModified)
var dateString = lastUpdated(dateObj)
document.write(dateString)
// -->
</script>
And this is the lastupdated JavaScript
function lastUpdated(dateObj)
{
var dayNames = new Array(8);
dayNames[1] = "Sunday";
dayNames[2] = "Monday";
dayNames[3] = "Tuesday";
dayNames[4] = "Wednesday";
dayNames[5] = "Thursday";
dayNames[6] = "Friday";
dayNames[7] = "Saturday";
var monthNames = new Array(13);
monthNames[1] = "January";
monthNames[2] = "February";
monthNames[3] = "March";
monthNames[4] = "April";
monthNames[5] = "May";
monthNames[6] = "June";
monthNames[7] = "July";
monthNames[8] = "August";
monthNames[9] = "September";
monthNames[10] = "October";
monthNames[11] = "November";
monthNames[12] = "December";
var theDay = dayNames[dateObj.getDay() + 1];
var theMonth = monthNames[dateObj.getMonth() + 1];
var dayNumber = dateObj.getDate();
var fullYear = dateObj.getYear();
if (fullYear < 1900) { fullYear = fullYear + 1900 };
var dateString = '<center><font face="arial, helvetica" size="-3">' + "Last modified on " + theDay + ", " + theMonth + " " + dayNumber + ", " + fullYear + " </font></center>";
return dateString;
}