code: def get_area_dates(bbox, date_interval, maxcc=None):
      
  
      area_info = get_area_info(bbox, date_interval, maxcc=maxcc)
      return sorted({datetime.datetime.strptime(tile_info['properties']['startDate'].strip('Z'),
                                                '%Y-%m-%dT%H:%M:%S')
                     for tile_info in area_info})
docs: Get list of times of existing images from specified area and time range
  
      :param bbox: bounding box of requested area
      :type bbox: geometry.BBox
      :param date_interval: a pair of time strings in ISO8601 format
      :type date_interval: tuple(str)
      :param maxcc: filter images by maximum percentage of cloud coverage
      :type maxcc: float in range [0, 1] or None
      :return: list of time strings in ISO8601 format
      :rtype: list[datetime.datetime]