../ dmsp_15_ephemeris_20221231.txt 22-Jun-2023 00:54 109333 dmsp_16_ephemeris_20221231.txt 22-Jun-2023 00:54 109280 dmsp_17_ephemeris_20221231.txt 22-Jun-2023 00:54 109212 dmsp_18_ephemeris_20221231.txt 22-Jun-2023 00:54 109414