../ dmsp_15_ephemeris_20170110.txt 22-Jun-2023 00:33 108043 dmsp_16_ephemeris_20170110.txt 22-Jun-2023 00:33 107944 dmsp_17_ephemeris_20170110.txt 22-Jun-2023 00:33 107884 dmsp_18_ephemeris_20170110.txt 22-Jun-2023 00:33 107813