../ dmsp_15_ephemeris_20190403.txt 22-Jun-2023 00:40 108132 dmsp_16_ephemeris_20190403.txt 22-Jun-2023 00:40 108272 dmsp_17_ephemeris_20190403.txt 22-Jun-2023 00:40 108232 dmsp_18_ephemeris_20190403.txt 22-Jun-2023 00:40 108207