../ dmsp_15_ephemeris_20110801.txt 22-Jun-2023 00:18 109526 dmsp_16_ephemeris_20110801.txt 22-Jun-2023 00:18 109559 dmsp_17_ephemeris_20110801.txt 22-Jun-2023 00:18 109666 dmsp_18_ephemeris_20110801.txt 22-Jun-2023 00:18 109707