../ dmsp_15_ephemeris_20131206.txt 22-Jun-2023 00:23 109335 dmsp_16_ephemeris_20131206.txt 22-Jun-2023 00:23 109285 dmsp_17_ephemeris_20131206.txt 22-Jun-2023 00:23 109247 dmsp_18_ephemeris_20131206.txt 22-Jun-2023 00:23 109416