../ dmsp_15_ephemeris_20200709.txt 22-Jun-2023 16:33 109490 dmsp_16_ephemeris_20200709.txt 22-Jun-2023 16:33 109486 dmsp_17_ephemeris_20200709.txt 22-Jun-2023 16:33 109641 dmsp_18_ephemeris_20200709.txt 22-Jun-2023 16:33 109588