../ dmsp_15_ephemeris_20241022.txt 22-Dec-2024 22:00 109607 dmsp_16_ephemeris_20241022.txt 22-Dec-2024 22:00 109536 dmsp_17_ephemeris_20241022.txt 22-Dec-2024 22:00 109498 dmsp_18_ephemeris_20241022.txt 22-Dec-2024 22:00 109559