../ dmsp_15_ephemeris_20130316.txt 22-Jun-2023 00:21 108204 dmsp_16_ephemeris_20130316.txt 22-Jun-2023 00:21 108183 dmsp_17_ephemeris_20130316.txt 22-Jun-2023 00:21 108146 dmsp_18_ephemeris_20130316.txt 22-Jun-2023 00:21 108139