../ dmsp_15_ephemeris_20241011.txt 11-Dec-2024 22:00 109658 dmsp_16_ephemeris_20241011.txt 11-Dec-2024 22:00 109587 dmsp_17_ephemeris_20241011.txt 11-Dec-2024 22:00 109551 dmsp_18_ephemeris_20241011.txt 11-Dec-2024 22:00 109493