../ dmsp_15_ephemeris_20190110.txt 22-Jun-2023 00:39 108068 dmsp_16_ephemeris_20190110.txt 22-Jun-2023 00:39 107944 dmsp_17_ephemeris_20190110.txt 22-Jun-2023 00:39 107924 dmsp_18_ephemeris_20190110.txt 22-Jun-2023 00:39 107907