../ dmsp_15_ephemeris_20110428.txt 22-Jun-2023 00:17 109588 dmsp_16_ephemeris_20110428.txt 22-Jun-2023 00:17 109578 dmsp_17_ephemeris_20110428.txt 22-Jun-2023 00:17 109736 dmsp_18_ephemeris_20110428.txt 22-Jun-2023 00:17 109637