../ dmsp_15_ephemeris_20120117.txt 22-Jun-2023 00:19 107975 dmsp_16_ephemeris_20120117.txt 22-Jun-2023 00:19 107955 dmsp_17_ephemeris_20120117.txt 22-Jun-2023 00:19 107919 dmsp_18_ephemeris_20120117.txt 22-Jun-2023 00:19 107943