../ dmsp_15_ephemeris_20180829.txt 22-Jun-2023 16:28 109615 dmsp_16_ephemeris_20180829.txt 22-Jun-2023 16:28 109710 dmsp_17_ephemeris_20180829.txt 22-Jun-2023 16:28 109679 dmsp_18_ephemeris_20180829.txt 22-Jun-2023 16:28 109705