../ dmsp_15_ephemeris_20241031.txt 31-Dec-2024 22:00 109463 dmsp_16_ephemeris_20241031.txt 31-Dec-2024 22:00 109342 dmsp_17_ephemeris_20241031.txt 31-Dec-2024 22:00 109441 dmsp_18_ephemeris_20241031.txt 31-Dec-2024 22:00 109471