../ dmsp_15_ephemeris_20180311.txt 22-Jun-2023 16:52 108184 dmsp_16_ephemeris_20180311.txt 22-Jun-2023 16:52 108185 dmsp_17_ephemeris_20180311.txt 22-Jun-2023 16:52 108127 dmsp_18_ephemeris_20180311.txt 22-Jun-2023 16:52 108091