../ dmsp_15_ephemeris_20170228.txt 22-Jun-2023 00:33 108185 dmsp_16_ephemeris_20170228.txt 22-Jun-2023 00:33 108033 dmsp_17_ephemeris_20170228.txt 22-Jun-2023 00:33 108157 dmsp_18_ephemeris_20170228.txt 22-Jun-2023 00:33 108105