../ dmsp_15_ephemeris_20110403.txt 22-Jun-2023 00:17 108245 dmsp_16_ephemeris_20110403.txt 22-Jun-2023 00:17 108198 dmsp_17_ephemeris_20110403.txt 22-Jun-2023 00:17 108232 dmsp_18_ephemeris_20110403.txt 22-Jun-2023 00:17 108251