../ dmsp_15_ephemeris_20190712.txt 22-Jun-2023 00:41 109563 dmsp_16_ephemeris_20190712.txt 22-Jun-2023 00:41 109514 dmsp_17_ephemeris_20190712.txt 22-Jun-2023 00:41 109558 dmsp_18_ephemeris_20190712.txt 22-Jun-2023 00:41 109580