../ dmsp_15_ephemeris_20210314.txt 22-Jun-2023 17:02 108160 dmsp_16_ephemeris_20210314.txt 22-Jun-2023 17:02 108206 dmsp_17_ephemeris_20210314.txt 22-Jun-2023 17:02 108129 dmsp_18_ephemeris_20210314.txt 22-Jun-2023 17:02 108116