../ dmsp_15_ephemeris_20110320.txt 22-Jun-2023 16:11 108210 dmsp_16_ephemeris_20110320.txt 22-Jun-2023 16:11 108228 dmsp_17_ephemeris_20110320.txt 22-Jun-2023 16:11 108246 dmsp_18_ephemeris_20110320.txt 22-Jun-2023 16:11 108191