../ dmsp_15_ephemeris_20190629.txt 22-Jun-2023 16:31 109609 dmsp_16_ephemeris_20190629.txt 22-Jun-2023 16:31 109337 dmsp_17_ephemeris_20190629.txt 22-Jun-2023 16:31 109571 dmsp_18_ephemeris_20190629.txt 22-Jun-2023 16:31 109477