../ dmsp_15_ephemeris_20120808.txt 22-Jun-2023 00:20 109660 dmsp_16_ephemeris_20120808.txt 22-Jun-2023 00:20 109618 dmsp_17_ephemeris_20120808.txt 22-Jun-2023 00:20 109679 dmsp_18_ephemeris_20120808.txt 22-Jun-2023 00:20 109618