../ dmsp_15_ephemeris_20190228.txt 22-Jun-2023 00:40 108126 dmsp_16_ephemeris_20190228.txt 22-Jun-2023 00:40 108097 dmsp_17_ephemeris_20190228.txt 22-Jun-2023 00:40 108152 dmsp_18_ephemeris_20190228.txt 22-Jun-2023 00:40 108053