def prev_date(self):
        """
        Date when this event last occurred in the local time zone
        (Does not include postponements, but does exclude cancellations)
        """
        prevDt = self.__localBefore(timezone.localtime(), dt.time.min)
        if prevDt is not None:
            return prevDt.date()
Date when this event last occurred in the local time zone
        (Does not include postponements, but does exclude cancellations)