../ dmsp_15_ephemeris_20250623.txt 22-Aug-2025 10:00 109538 dmsp_16_ephemeris_20250623.txt 22-Aug-2025 10:00 109611 dmsp_17_ephemeris_20250623.txt 22-Aug-2025 10:00 109651 dmsp_18_ephemeris_20250623.txt 22-Aug-2025 10:00 109516