../ dmsp_15_ephemeris_20190709.txt 22-Jun-2023 00:41 109576 dmsp_16_ephemeris_20190709.txt 22-Jun-2023 00:41 109542 dmsp_17_ephemeris_20190709.txt 22-Jun-2023 00:41 109539 dmsp_18_ephemeris_20190709.txt 22-Jun-2023 00:41 109462