../ dmsp_15_ephemeris_20170329.txt 22-Jun-2023 16:25 108206 dmsp_16_ephemeris_20170329.txt 22-Jun-2023 16:25 108275 dmsp_17_ephemeris_20170329.txt 22-Jun-2023 16:25 108356 dmsp_18_ephemeris_20170329.txt 22-Jun-2023 16:25 108172