../ dmsp_15_ephemeris_20180405.txt 22-Jun-2023 16:52 108115 dmsp_16_ephemeris_20180405.txt 22-Jun-2023 16:52 108216 dmsp_17_ephemeris_20180405.txt 22-Jun-2023 16:52 108284 dmsp_18_ephemeris_20180405.txt 22-Jun-2023 16:52 108162