../ dmsp_15_ephemeris_20111017.txt 22-Jun-2023 00:18 109451 dmsp_16_ephemeris_20111017.txt 22-Jun-2023 00:18 109545 dmsp_17_ephemeris_20111017.txt 22-Jun-2023 00:18 109467 dmsp_18_ephemeris_20111017.txt 22-Jun-2023 00:18 109517