[Zope] DateTime help

My proxy is apparently not working well ( what else is new...), so I can't get to www.zope.org. Maybe someone can help me with this simple DateTime problem. I have a variable, accessible as <dtml-var lastLoginTime>. the value is functionally equivalent to int(time.time()). How can I turn this into a DateTime object within dtml so that I may format it eg, fmt=AMPM ? Thanks, Bill Scherer