../ dmsp_15_ephemeris_20180112.txt 22-Jun-2023 16:51 107975 dmsp_16_ephemeris_20180112.txt 22-Jun-2023 16:51 107979 dmsp_17_ephemeris_20180112.txt 22-Jun-2023 16:51 107878 dmsp_18_ephemeris_20180112.txt 22-Jun-2023 16:51 107860