../ dmsp_15_ephemeris_20180324.txt 22-Jun-2023 00:36 108164 dmsp_16_ephemeris_20180324.txt 22-Jun-2023 00:36 108212 dmsp_17_ephemeris_20180324.txt 22-Jun-2023 00:36 108290 dmsp_18_ephemeris_20180324.txt 22-Jun-2023 00:36 108101