../ dmsp_15_ephemeris_20130524.txt 22-Jun-2023 00:22 109582 dmsp_16_ephemeris_20130524.txt 22-Jun-2023 00:22 109661 dmsp_17_ephemeris_20130524.txt 22-Jun-2023 00:22 109747 dmsp_18_ephemeris_20130524.txt 22-Jun-2023 00:22 109714