../ dmsp_15_ephemeris_20170221.txt 22-Jun-2023 16:48 108195 dmsp_16_ephemeris_20170221.txt 22-Jun-2023 16:48 108047 dmsp_17_ephemeris_20170221.txt 22-Jun-2023 16:48 108029 dmsp_18_ephemeris_20170221.txt 22-Jun-2023 16:48 107996