../ dmsp_15_ephemeris_20170827.txt 22-Jun-2023 00:35 109652 dmsp_16_ephemeris_20170827.txt 22-Jun-2023 00:35 109604 dmsp_17_ephemeris_20170827.txt 22-Jun-2023 00:35 109771 dmsp_18_ephemeris_20170827.txt 22-Jun-2023 00:35 109715