../ dmsp_15_ephemeris_20171020.txt 22-Jun-2023 00:35 109586 dmsp_16_ephemeris_20171020.txt 22-Jun-2023 00:35 109507 dmsp_17_ephemeris_20171020.txt 22-Jun-2023 00:35 109552 dmsp_18_ephemeris_20171020.txt 22-Jun-2023 00:35 109469