../ dmsp_15_ephemeris_20190612.txt 22-Jun-2023 00:41 109502 dmsp_16_ephemeris_20190612.txt 22-Jun-2023 00:41 109584 dmsp_17_ephemeris_20190612.txt 22-Jun-2023 00:41 109451 dmsp_18_ephemeris_20190612.txt 22-Jun-2023 00:41 109590