def get_timerange_formatted(self, now):
        """
        Return two ISO8601 formatted date strings, one for timeMin, the other for timeMax (to be consumed by get_events)
        """
        later = now + datetime.timedelta(days=self.days)
        return now.isoformat(), later.isoformat()
Return two ISO8601 formatted date strings, one for timeMin, the other for timeMax (to be consumed by get_events)