../ dmsp_15_ephemeris_20121031.txt 22-Jun-2023 00:20 109487 dmsp_16_ephemeris_20121031.txt 22-Jun-2023 00:20 109569 dmsp_17_ephemeris_20121031.txt 22-Jun-2023 00:20 109549 dmsp_18_ephemeris_20121031.txt 22-Jun-2023 00:20 109479