../ dmsp_15_ephemeris_20120527.txt 22-Jun-2023 00:20 109529 dmsp_16_ephemeris_20120527.txt 22-Jun-2023 00:20 109652 dmsp_17_ephemeris_20120527.txt 22-Jun-2023 00:20 109703 dmsp_18_ephemeris_20120527.txt 22-Jun-2023 00:20 109609