../ dmsp_15_ephemeris_20110209.txt 22-Jun-2023 16:10 108126 dmsp_16_ephemeris_20110209.txt 22-Jun-2023 16:10 108180 dmsp_17_ephemeris_20110209.txt 22-Jun-2023 16:10 108051 dmsp_18_ephemeris_20110209.txt 22-Jun-2023 16:10 108180