../ dmsp_15_ephemeris_20201207.txt 22-Jun-2023 00:45 109501 dmsp_16_ephemeris_20201207.txt 22-Jun-2023 00:45 109326 dmsp_17_ephemeris_20201207.txt 22-Jun-2023 00:45 109286 dmsp_18_ephemeris_20201207.txt 22-Jun-2023 00:45 109342