../ dmsp_15_ephemeris_20190609.txt 22-Jun-2023 16:31 109477 dmsp_16_ephemeris_20190609.txt 22-Jun-2023 16:31 109513 dmsp_17_ephemeris_20190609.txt 22-Jun-2023 16:31 109591 dmsp_18_ephemeris_20190609.txt 22-Jun-2023 16:31 109651