../ dmsp_15_ephemeris_20171127.txt 22-Jun-2023 00:35 109325 dmsp_16_ephemeris_20171127.txt 22-Jun-2023 00:35 109389 dmsp_17_ephemeris_20171127.txt 22-Jun-2023 00:35 109479 dmsp_18_ephemeris_20171127.txt 22-Jun-2023 00:35 109385