../ dmsp_15_ephemeris_20130616.txt 22-Jun-2023 00:22 109486 dmsp_16_ephemeris_20130616.txt 22-Jun-2023 00:22 109546 dmsp_17_ephemeris_20130616.txt 22-Jun-2023 00:22 109728 dmsp_18_ephemeris_20130616.txt 22-Jun-2023 00:22 109502