../ dmsp_15_ephemeris_20121029.txt 22-Jun-2023 00:20 109476 dmsp_16_ephemeris_20121029.txt 22-Jun-2023 00:20 109522 dmsp_17_ephemeris_20121029.txt 22-Jun-2023 00:20 109604 dmsp_18_ephemeris_20121029.txt 22-Jun-2023 00:20 109507