../ dmsp_15_ephemeris_20130906.txt 22-Jun-2023 00:22 109624 dmsp_16_ephemeris_20130906.txt 22-Jun-2023 00:22 109652 dmsp_17_ephemeris_20130906.txt 22-Jun-2023 00:22 109725 dmsp_18_ephemeris_20130906.txt 22-Jun-2023 00:22 109613