../ dmsp_15_ephemeris_20241029.txt 29-Dec-2024 22:00 109543 dmsp_16_ephemeris_20241029.txt 29-Dec-2024 22:00 109528 dmsp_17_ephemeris_20241029.txt 29-Dec-2024 22:00 109524 dmsp_18_ephemeris_20241029.txt 29-Dec-2024 22:00 109514