../ dmsp_15_ephemeris_20201110.txt 22-Jun-2023 00:45 109459 dmsp_16_ephemeris_20201110.txt 22-Jun-2023 00:45 109403 dmsp_17_ephemeris_20201110.txt 22-Jun-2023 00:45 109426 dmsp_18_ephemeris_20201110.txt 22-Jun-2023 00:45 109305