../ dmsp_15_ephemeris_20110711.txt 22-Jun-2023 00:18 109538 dmsp_16_ephemeris_20110711.txt 22-Jun-2023 00:18 109751 dmsp_17_ephemeris_20110711.txt 22-Jun-2023 00:18 109544 dmsp_18_ephemeris_20110711.txt 22-Jun-2023 00:18 109693