../ dmsp_15_ephemeris_20241012.txt 12-Dec-2024 22:00 109535 dmsp_16_ephemeris_20241012.txt 12-Dec-2024 22:00 109605 dmsp_17_ephemeris_20241012.txt 12-Dec-2024 22:00 109552 dmsp_18_ephemeris_20241012.txt 12-Dec-2024 22:00 109517