../ dmsp_15_ephemeris_20171202.txt 22-Jun-2023 00:35 109457 dmsp_16_ephemeris_20171202.txt 22-Jun-2023 00:35 109405 dmsp_17_ephemeris_20171202.txt 22-Jun-2023 00:35 109375 dmsp_18_ephemeris_20171202.txt 22-Jun-2023 00:35 109189