../ dmsp_15_ephemeris_20201115.txt 22-Jun-2023 00:45 109373 dmsp_16_ephemeris_20201115.txt 22-Jun-2023 00:45 109477 dmsp_17_ephemeris_20201115.txt 22-Jun-2023 00:45 109369 dmsp_18_ephemeris_20201115.txt 22-Jun-2023 00:45 109471