../ dmsp_15_ephemeris_20170305.txt 22-Jun-2023 00:33 108241 dmsp_16_ephemeris_20170305.txt 22-Jun-2023 00:33 108187 dmsp_17_ephemeris_20170305.txt 22-Jun-2023 00:33 108183 dmsp_18_ephemeris_20170305.txt 22-Jun-2023 00:33 108110