../ dmsp_15_ephemeris_20121223.txt 22-Jun-2023 16:11 109356 dmsp_16_ephemeris_20121223.txt 22-Jun-2023 16:11 109256 dmsp_17_ephemeris_20121223.txt 22-Jun-2023 16:11 109310 dmsp_18_ephemeris_20121223.txt 22-Jun-2023 16:11 109484