../ dmsp_15_ephemeris_20210120.txt 22-Jun-2023 00:46 108079 dmsp_16_ephemeris_20210120.txt 22-Jun-2023 00:46 107978 dmsp_17_ephemeris_20210120.txt 22-Jun-2023 00:46 107862 dmsp_18_ephemeris_20210120.txt 22-Jun-2023 00:46 107904