../ dmsp_15_ephemeris_20191205.txt 22-Jun-2023 00:42 109399 dmsp_16_ephemeris_20191205.txt 22-Jun-2023 00:42 109497 dmsp_17_ephemeris_20191205.txt 22-Jun-2023 00:42 109305 dmsp_18_ephemeris_20191205.txt 22-Jun-2023 00:42 109238