../ dmsp_15_ephemeris_20201024.txt 22-Jun-2023 00:45 109484 dmsp_16_ephemeris_20201024.txt 22-Jun-2023 00:45 109581 dmsp_17_ephemeris_20201024.txt 22-Jun-2023 00:45 109478 dmsp_18_ephemeris_20201024.txt 22-Jun-2023 00:45 109482