../ dmsp_15_ephemeris_20110403.txt 22-Jun-2023 16:29 108245 dmsp_16_ephemeris_20110403.txt 22-Jun-2023 16:29 108198 dmsp_17_ephemeris_20110403.txt 22-Jun-2023 16:29 108232 dmsp_18_ephemeris_20110403.txt 22-Jun-2023 16:29 108251