Returns date and ids of flyovers

        Args:
            lat: latitude float
            lon: longitude float
            begin: date instance
            end: date instance

        Returns:
            json

def get_assets(cls, lat, lon, begin=None, end=None):
        """
        Returns date and ids of flyovers

        Args:
            lat: latitude float
            lon: longitude float
            begin: date instance
            end: date instance

        Returns:
            json
        """
        instance = cls('planetary/earth/assets')

        filters = {
            'lat': lat,
            'lon': lon,
            'begin': begin,
            'end': end,
        }

        return instance.get_resource(**filters)