../ dmsp_15_ephemeris_20190603.txt 22-Jun-2023 00:40 109437 dmsp_16_ephemeris_20190603.txt 22-Jun-2023 00:40 109510 dmsp_17_ephemeris_20190603.txt 22-Jun-2023 00:40 109648 dmsp_18_ephemeris_20190603.txt 22-Jun-2023 00:40 109582