../ dmsp_15_ephemeris_20201003.txt 22-Jun-2023 00:45 109658 dmsp_16_ephemeris_20201003.txt 22-Jun-2023 00:45 109642 dmsp_17_ephemeris_20201003.txt 22-Jun-2023 00:45 109649 dmsp_18_ephemeris_20201003.txt 22-Jun-2023 00:45 109666