../ dmsp_15_ephemeris_20110906.txt 22-Jun-2023 00:18 109703 dmsp_16_ephemeris_20110906.txt 22-Jun-2023 00:18 109663 dmsp_17_ephemeris_20110906.txt 22-Jun-2023 00:18 109817 dmsp_18_ephemeris_20110906.txt 22-Jun-2023 00:18 109692