../ dmsp_15_ephemeris_20241126.txt 26-Jan-2025 22:00 243 dmsp_16_ephemeris_20241126.txt 26-Jan-2025 22:00 243 dmsp_17_ephemeris_20241126.txt 26-Jan-2025 22:00 243 dmsp_18_ephemeris_20241126.txt 26-Jan-2025 22:00 243