../ dmsp_15_ephemeris_20181225.txt 22-Jun-2023 16:54 109460 dmsp_16_ephemeris_20181225.txt 22-Jun-2023 16:54 109388 dmsp_17_ephemeris_20181225.txt 22-Jun-2023 16:54 109244 dmsp_18_ephemeris_20181225.txt 22-Jun-2023 16:54 109292