../ dmsp_15_ephemeris_20130820.txt 22-Jun-2023 16:35 109615 dmsp_16_ephemeris_20130820.txt 22-Jun-2023 16:35 109618 dmsp_17_ephemeris_20130820.txt 22-Jun-2023 16:35 109820 dmsp_18_ephemeris_20130820.txt 22-Jun-2023 16:35 109661