../ dmsp_15_ephemeris_20191108.txt 22-Jun-2023 00:42 109541 dmsp_16_ephemeris_20191108.txt 22-Jun-2023 00:42 109410 dmsp_17_ephemeris_20191108.txt 22-Jun-2023 00:42 109402 dmsp_18_ephemeris_20191108.txt 22-Jun-2023 00:42 109491