../ dmsp_15_ephemeris_20241014.txt 14-Dec-2024 22:00 109608 dmsp_16_ephemeris_20241014.txt 14-Dec-2024 22:00 109638 dmsp_17_ephemeris_20241014.txt 14-Dec-2024 22:00 109493 dmsp_18_ephemeris_20241014.txt 14-Dec-2024 22:00 109531