../ dmsp_15_ephemeris_20110409.txt 22-Jun-2023 00:17 108185 dmsp_16_ephemeris_20110409.txt 22-Jun-2023 00:17 108296 dmsp_17_ephemeris_20110409.txt 22-Jun-2023 00:17 108146 dmsp_18_ephemeris_20110409.txt 22-Jun-2023 00:17 108343