../ dmsp_15_ephemeris_20191031.txt 22-Jun-2023 16:57 109507 dmsp_16_ephemeris_20191031.txt 22-Jun-2023 16:57 109442 dmsp_17_ephemeris_20191031.txt 22-Jun-2023 16:57 109370 dmsp_18_ephemeris_20191031.txt 22-Jun-2023 16:57 109509