../ dmsp_15_ephemeris_20170722.txt 22-Jun-2023 00:34 109591 dmsp_16_ephemeris_20170722.txt 22-Jun-2023 00:34 109479 dmsp_17_ephemeris_20170722.txt 22-Jun-2023 00:34 109667 dmsp_18_ephemeris_20170722.txt 22-Jun-2023 00:34 109629