../ dmsp_15_ephemeris_20241101.txt 01-Jan-2025 22:00 109533 dmsp_16_ephemeris_20241101.txt 01-Jan-2025 22:00 109556 dmsp_17_ephemeris_20241101.txt 01-Jan-2025 22:00 109377 dmsp_18_ephemeris_20241101.txt 01-Jan-2025 22:00 109444