../ dmsp_15_ephemeris_20200725.txt 22-Jun-2023 16:33 109588 dmsp_16_ephemeris_20200725.txt 22-Jun-2023 16:33 109576 dmsp_17_ephemeris_20200725.txt 22-Jun-2023 16:33 109604 dmsp_18_ephemeris_20200725.txt 22-Jun-2023 16:33 109520