../ dmsp_15_ephemeris_20180316.txt 22-Jun-2023 00:36 108115 dmsp_16_ephemeris_20180316.txt 22-Jun-2023 00:36 108185 dmsp_17_ephemeris_20180316.txt 22-Jun-2023 00:36 108143 dmsp_18_ephemeris_20180316.txt 22-Jun-2023 00:36 108174