../ dmsp_15_ephemeris_20180217.txt 22-Jun-2023 00:36 108157 dmsp_16_ephemeris_20180217.txt 22-Jun-2023 00:36 108207 dmsp_17_ephemeris_20180217.txt 22-Jun-2023 00:36 108110 dmsp_18_ephemeris_20180217.txt 22-Jun-2023 00:36 108097