../ dmsp_15_ephemeris_20171015.txt 22-Jun-2023 00:35 109520 dmsp_16_ephemeris_20171015.txt 22-Jun-2023 00:35 109679 dmsp_17_ephemeris_20171015.txt 22-Jun-2023 00:35 109516 dmsp_18_ephemeris_20171015.txt 22-Jun-2023 00:35 109542