../ dmsp_15_ephemeris_20200804.txt 22-Jun-2023 00:44 109558 dmsp_16_ephemeris_20200804.txt 22-Jun-2023 00:44 109583 dmsp_17_ephemeris_20200804.txt 22-Jun-2023 00:44 109756 dmsp_18_ephemeris_20200804.txt 22-Jun-2023 00:44 109545