../ dmsp_15_ephemeris_20181006.txt 22-Jun-2023 00:38 109639 dmsp_16_ephemeris_20181006.txt 22-Jun-2023 00:38 109653 dmsp_17_ephemeris_20181006.txt 22-Jun-2023 00:38 109428 dmsp_18_ephemeris_20181006.txt 22-Jun-2023 00:38 109625