../ dmsp_15_ephemeris_20190112.txt 22-Jun-2023 00:39 108076 dmsp_16_ephemeris_20190112.txt 22-Jun-2023 00:39 107924 dmsp_17_ephemeris_20190112.txt 22-Jun-2023 00:39 107836 dmsp_18_ephemeris_20190112.txt 22-Jun-2023 00:39 107853