../ dmsp_15_ephemeris_20170313.txt 22-Jun-2023 00:33 108137 dmsp_16_ephemeris_20170313.txt 22-Jun-2023 00:33 108214 dmsp_17_ephemeris_20170313.txt 22-Jun-2023 00:33 108311 dmsp_18_ephemeris_20170313.txt 22-Jun-2023 00:33 108234