Straight Javascript - I finally figured out a solution.
Here it is:
<script type="text/javascript">
var d = new Date()
d.setDate(d.getDate()-60)
document.write(d.getMonth() + 1)
document.write("/")
document.write(d.getDate())
document.write("/")
document.write(d.getFullYear())
</script>
Thanks for the interest!