../ dmsp_15_ephemeris_20170625.txt 22-Jun-2023 00:34 109434 dmsp_16_ephemeris_20170625.txt 22-Jun-2023 00:34 109582 dmsp_17_ephemeris_20170625.txt 22-Jun-2023 00:34 109719 dmsp_18_ephemeris_20170625.txt 22-Jun-2023 00:34 109442