../ dmsp_15_ephemeris_20241027.txt 27-Dec-2024 22:00 109554 dmsp_16_ephemeris_20241027.txt 27-Dec-2024 22:00 109405 dmsp_17_ephemeris_20241027.txt 27-Dec-2024 22:00 109528 dmsp_18_ephemeris_20241027.txt 27-Dec-2024 22:00 109530