../ dmsp_15_ephemeris_20210227.txt 22-Jun-2023 00:46 108146 dmsp_16_ephemeris_20210227.txt 22-Jun-2023 00:46 108126 dmsp_17_ephemeris_20210227.txt 22-Jun-2023 00:46 108160 dmsp_18_ephemeris_20210227.txt 22-Jun-2023 00:46 108173