../ dmsp_15_ephemeris_20130311.txt 22-Jun-2023 00:21 108126 dmsp_16_ephemeris_20130311.txt 22-Jun-2023 00:21 108111 dmsp_17_ephemeris_20130311.txt 22-Jun-2023 00:21 108195 dmsp_18_ephemeris_20130311.txt 22-Jun-2023 00:21 108194