../ dmsp_15_ephemeris_20171104.txt 22-Jun-2023 00:35 109509 dmsp_16_ephemeris_20171104.txt 22-Jun-2023 00:35 109507 dmsp_17_ephemeris_20171104.txt 22-Jun-2023 00:35 109391 dmsp_18_ephemeris_20171104.txt 22-Jun-2023 00:35 109348