../ dmsp_15_ephemeris_20190211.txt 22-Jun-2023 16:55 108126 dmsp_16_ephemeris_20190211.txt 22-Jun-2023 16:55 108037 dmsp_17_ephemeris_20190211.txt 22-Jun-2023 16:55 108076 dmsp_18_ephemeris_20190211.txt 22-Jun-2023 16:55 108035