../ dmsp_15_ephemeris_20190515.txt 22-Jun-2023 16:56 109434 dmsp_16_ephemeris_20190515.txt 22-Jun-2023 16:56 109542 dmsp_17_ephemeris_20190515.txt 22-Jun-2023 16:56 109628 dmsp_18_ephemeris_20190515.txt 22-Jun-2023 16:56 109596