zoho.currentdate in url?

Anyone know if there is a way to specify criteria in a url that ranges between the current date and a future date? My lame attempt was: https://creator.zoho.com/user/events-calendar/#View:Events_Form_View?Day=zoho.currentdate;30-May-2009&op=58 ; which doesn't work ;-). I'm sure I'm mixing my metaphors, as it were....