../ dmsp_15_ephemeris_20220101.txt 22-Jun-2023 00:49 106426 dmsp_16_ephemeris_20220101.txt 22-Jun-2023 00:49 106438 dmsp_17_ephemeris_20220101.txt 22-Jun-2023 00:49 106377 dmsp_18_ephemeris_20220101.txt 22-Jun-2023 00:49 106416