../ dmsp_15_ephemeris_20201225.txt 22-Jun-2023 00:45 109415 dmsp_16_ephemeris_20201225.txt 22-Jun-2023 00:45 109330 dmsp_17_ephemeris_20201225.txt 22-Jun-2023 00:45 109328 dmsp_18_ephemeris_20201225.txt 22-Jun-2023 00:45 109349