../ dmsp_15_ephemeris_20201107.txt 22-Jun-2023 00:45 109437 dmsp_16_ephemeris_20201107.txt 22-Jun-2023 00:45 109485 dmsp_17_ephemeris_20201107.txt 22-Jun-2023 00:45 109339 dmsp_18_ephemeris_20201107.txt 22-Jun-2023 00:45 109529