../ dmsp_15_ephemeris_20111025.txt 22-Jun-2023 00:18 109546 dmsp_16_ephemeris_20111025.txt 22-Jun-2023 00:18 109493 dmsp_17_ephemeris_20111025.txt 22-Jun-2023 00:18 109500 dmsp_18_ephemeris_20111025.txt 22-Jun-2023 00:18 109603