../ dmsp_15_ephemeris_20241228.txt 28-Feb-2025 22:00 109315 dmsp_16_ephemeris_20241228.txt 28-Feb-2025 22:00 109254 dmsp_17_ephemeris_20241228.txt 28-Feb-2025 22:00 109194 dmsp_18_ephemeris_20241228.txt 28-Feb-2025 22:00 109393