../ dmsp_15_ephemeris_20171029.txt 22-Jun-2023 00:35 109549 dmsp_16_ephemeris_20171029.txt 22-Jun-2023 00:35 109620 dmsp_17_ephemeris_20171029.txt 22-Jun-2023 00:35 109548 dmsp_18_ephemeris_20171029.txt 22-Jun-2023 00:35 109462