../ dmsp_15_ephemeris_20170805.txt 22-Jun-2023 00:35 109538 dmsp_16_ephemeris_20170805.txt 22-Jun-2023 00:35 109558 dmsp_17_ephemeris_20170805.txt 22-Jun-2023 00:35 109800 dmsp_18_ephemeris_20170805.txt 22-Jun-2023 00:35 109563