../ dmsp_15_ephemeris_20120312.txt 22-Jun-2023 16:31 108219 dmsp_16_ephemeris_20120312.txt 22-Jun-2023 16:31 108097 dmsp_17_ephemeris_20120312.txt 22-Jun-2023 16:31 108152 dmsp_18_ephemeris_20120312.txt 22-Jun-2023 16:31 108230