../ dmsp_15_ephemeris_20200725.txt 22-Jun-2023 00:44 109588 dmsp_16_ephemeris_20200725.txt 22-Jun-2023 00:44 109576 dmsp_17_ephemeris_20200725.txt 22-Jun-2023 00:44 109604 dmsp_18_ephemeris_20200725.txt 22-Jun-2023 00:44 109520