../ dmsp_15_ephemeris_20131214.txt 22-Jun-2023 00:23 109314 dmsp_16_ephemeris_20131214.txt 22-Jun-2023 00:23 109275 dmsp_17_ephemeris_20131214.txt 22-Jun-2023 00:23 109307 dmsp_18_ephemeris_20131214.txt 22-Jun-2023 00:23 109359