../ dmsp_15_ephemeris_20210314.txt 22-Jun-2023 16:35 108160 dmsp_16_ephemeris_20210314.txt 22-Jun-2023 16:35 108206 dmsp_17_ephemeris_20210314.txt 22-Jun-2023 16:35 108129 dmsp_18_ephemeris_20210314.txt 22-Jun-2023 16:35 108116