../ dmsp_15_ephemeris_20190217.txt 22-Jun-2023 16:30 108150 dmsp_16_ephemeris_20190217.txt 22-Jun-2023 16:30 108176 dmsp_17_ephemeris_20190217.txt 22-Jun-2023 16:30 108052 dmsp_18_ephemeris_20190217.txt 22-Jun-2023 16:30 108095