../ dmsp_15_ephemeris_20190325.txt 22-Jun-2023 00:40 108091 dmsp_16_ephemeris_20190325.txt 22-Jun-2023 00:40 108107 dmsp_17_ephemeris_20190325.txt 22-Jun-2023 00:40 108226 dmsp_18_ephemeris_20190325.txt 22-Jun-2023 00:40 108260