../ dmsp_15_ephemeris_20171003.txt 22-Jun-2023 16:50 109700 dmsp_16_ephemeris_20171003.txt 22-Jun-2023 16:50 109609 dmsp_17_ephemeris_20171003.txt 22-Jun-2023 16:50 109526 dmsp_18_ephemeris_20171003.txt 22-Jun-2023 16:50 109537