../ dmsp_15_ephemeris_20180401.txt 22-Jun-2023 00:36 108185 dmsp_16_ephemeris_20180401.txt 22-Jun-2023 00:36 108235 dmsp_17_ephemeris_20180401.txt 22-Jun-2023 00:36 108296 dmsp_18_ephemeris_20180401.txt 22-Jun-2023 00:36 108088