../ dmsp_15_ephemeris_20110311.txt 22-Jun-2023 16:11 108120 dmsp_16_ephemeris_20110311.txt 22-Jun-2023 16:11 108070 dmsp_17_ephemeris_20110311.txt 22-Jun-2023 16:11 108124 dmsp_18_ephemeris_20110311.txt 22-Jun-2023 16:11 108241