../ dmsp_15_ephemeris_20130523.txt 22-Jun-2023 00:22 109442 dmsp_16_ephemeris_20130523.txt 22-Jun-2023 00:22 109548 dmsp_17_ephemeris_20130523.txt 22-Jun-2023 00:22 109795 dmsp_18_ephemeris_20130523.txt 22-Jun-2023 00:22 109571