../ dmsp_15_ephemeris_20201211.txt 22-Jun-2023 00:45 109390 dmsp_16_ephemeris_20201211.txt 22-Jun-2023 00:45 109296 dmsp_17_ephemeris_20201211.txt 22-Jun-2023 00:45 109316 dmsp_18_ephemeris_20201211.txt 22-Jun-2023 00:45 109392