../ dmsp_15_ephemeris_20200516.txt 22-Jun-2023 16:33 109571 dmsp_16_ephemeris_20200516.txt 22-Jun-2023 16:33 109558 dmsp_17_ephemeris_20200516.txt 22-Jun-2023 16:33 109586 dmsp_18_ephemeris_20200516.txt 22-Jun-2023 16:33 109605