../ dmsp_15_ephemeris_20121221.txt 22-Jun-2023 16:33 109356 dmsp_16_ephemeris_20121221.txt 22-Jun-2023 16:33 109305 dmsp_17_ephemeris_20121221.txt 22-Jun-2023 16:33 109350 dmsp_18_ephemeris_20121221.txt 22-Jun-2023 16:33 109365