../ dmsp_15_ephemeris_20220404.txt 22-Jun-2023 00:50 108198 dmsp_16_ephemeris_20220404.txt 22-Jun-2023 00:50 108157 dmsp_17_ephemeris_20220404.txt 22-Jun-2023 00:50 108127 dmsp_18_ephemeris_20220404.txt 22-Jun-2023 00:50 108274