../ dmsp_15_ephemeris_20230201.txt 22-Jun-2023 00:54 107975 dmsp_16_ephemeris_20230201.txt 22-Jun-2023 00:54 107986 dmsp_17_ephemeris_20230201.txt 22-Jun-2023 00:54 107979 dmsp_18_ephemeris_20230201.txt 22-Jun-2023 00:54 108002