../ dmsp_15_ephemeris_20111122.txt 22-Jun-2023 00:18 109446 dmsp_16_ephemeris_20111122.txt 22-Jun-2023 00:18 109350 dmsp_17_ephemeris_20111122.txt 22-Jun-2023 00:18 109312 dmsp_18_ephemeris_20111122.txt 22-Jun-2023 00:18 109538