code: def calendars(self):
          
          today = datetime.today()
          first_day, last_day = monthrange(today.year, today.month)
          from_dt = datetime(today.year, today.month, first_day)
          to_dt = datetime(today.year, today.month, last_day)
          params = dict(self.params)
          params.update({
              'lang': 'en-us',
              'usertz': get_localzone().zone,
              'startDate': from_dt.strftime('%Y-%m-%d'),
              'endDate': to_dt.strftime('%Y-%m-%d')
          })
          req = self.session.get(self._calendars, params=params)
          self.response = req.json()
          return self.response['Collection']
docs: Retrieves calendars for this month