paramater for handling recurring events in google feed

There are some URL parameters you might want to try for handling
recurring events in the XML feed.

singleevents=true&sortorder=ascending&futureevents=true

singleevents=true includes the recurring events as separate events

sortorder=ascending (assending order by starttime in your case)

futureevents=true (only retrieves events in the future)

If you use singleevents=true, there would also be a reference to the
original event as a gd$originalEvent