../ dmsp_15_ephemeris_20111206.txt 22-Jun-2023 00:18 109358 dmsp_16_ephemeris_20111206.txt 22-Jun-2023 00:18 109240 dmsp_17_ephemeris_20111206.txt 22-Jun-2023 00:18 109326 dmsp_18_ephemeris_20111206.txt 22-Jun-2023 00:18 109396