../ dmsp_15_ephemeris_20190111.txt 22-Jun-2023 00:39 108073 dmsp_16_ephemeris_20190111.txt 22-Jun-2023 00:39 107860 dmsp_17_ephemeris_20190111.txt 22-Jun-2023 00:39 107867 dmsp_18_ephemeris_20190111.txt 22-Jun-2023 00:39 107887