../ dmsp_15_ephemeris_20171002.txt 22-Jun-2023 00:35 109482 dmsp_16_ephemeris_20171002.txt 22-Jun-2023 00:35 109511 dmsp_17_ephemeris_20171002.txt 22-Jun-2023 00:35 109713 dmsp_18_ephemeris_20171002.txt 22-Jun-2023 00:35 109622