../ dmsp_15_ephemeris_20110828.txt 22-Jun-2023 00:18 109644 dmsp_16_ephemeris_20110828.txt 22-Jun-2023 00:18 109735 dmsp_17_ephemeris_20110828.txt 22-Jun-2023 00:18 109634 dmsp_18_ephemeris_20110828.txt 22-Jun-2023 00:18 109580