../ dmsp_15_ephemeris_20200513.txt 22-Jun-2023 16:33 109613 dmsp_16_ephemeris_20200513.txt 22-Jun-2023 16:33 109585 dmsp_17_ephemeris_20200513.txt 22-Jun-2023 16:33 109735 dmsp_18_ephemeris_20200513.txt 22-Jun-2023 16:33 109618