../ dmsp_15_ephemeris_20191205.txt 22-Jun-2023 16:58 109399 dmsp_16_ephemeris_20191205.txt 22-Jun-2023 16:58 109497 dmsp_17_ephemeris_20191205.txt 22-Jun-2023 16:58 109305 dmsp_18_ephemeris_20191205.txt 22-Jun-2023 16:58 109238