../ dmsp_15_ephemeris_20170111.txt 22-Jun-2023 00:33 107987 dmsp_16_ephemeris_20170111.txt 22-Jun-2023 00:33 108050 dmsp_17_ephemeris_20170111.txt 22-Jun-2023 00:33 107925 dmsp_18_ephemeris_20170111.txt 22-Jun-2023 00:33 107835