../ dmsp_15_ephemeris_20190409.txt 22-Jun-2023 16:30 108230 dmsp_16_ephemeris_20190409.txt 22-Jun-2023 16:30 108237 dmsp_17_ephemeris_20190409.txt 22-Jun-2023 16:30 108235 dmsp_18_ephemeris_20190409.txt 22-Jun-2023 16:30 108252