../ dmsp_15_ephemeris_20230415.txt 09-Nov-2025 23:34 109620 dmsp_16_ephemeris_20230415.txt 09-Nov-2025 23:34 109627 dmsp_17_ephemeris_20230415.txt 09-Nov-2025 23:34 109645 dmsp_18_ephemeris_20230415.txt 09-Nov-2025 23:34 109609