../ dmsp_15_ephemeris_20170324.txt 22-Jun-2023 00:33 108251 dmsp_16_ephemeris_20170324.txt 22-Jun-2023 00:33 108041 dmsp_17_ephemeris_20170324.txt 22-Jun-2023 00:33 108185 dmsp_18_ephemeris_20170324.txt 22-Jun-2023 00:33 108100