../ dmsp_15_ephemeris_20171031.txt 22-Jun-2023 00:35 109493 dmsp_16_ephemeris_20171031.txt 22-Jun-2023 00:35 109487 dmsp_17_ephemeris_20171031.txt 22-Jun-2023 00:35 109564 dmsp_18_ephemeris_20171031.txt 22-Jun-2023 00:35 109440