../ dmsp_15_ephemeris_20241017.txt 17-Dec-2024 22:00 109596 dmsp_16_ephemeris_20241017.txt 17-Dec-2024 22:00 109559 dmsp_17_ephemeris_20241017.txt 17-Dec-2024 22:00 109415 dmsp_18_ephemeris_20241017.txt 17-Dec-2024 22:00 109615