../ dmsp_15_ephemeris_20171012.txt 22-Jun-2023 00:35 109587 dmsp_16_ephemeris_20171012.txt 22-Jun-2023 00:35 109682 dmsp_17_ephemeris_20171012.txt 22-Jun-2023 00:35 109656 dmsp_18_ephemeris_20171012.txt 22-Jun-2023 00:35 109412