../ dmsp_15_ephemeris_20170314.txt 22-Jun-2023 00:33 108284 dmsp_16_ephemeris_20170314.txt 22-Jun-2023 00:33 108147 dmsp_17_ephemeris_20170314.txt 22-Jun-2023 00:33 108177 dmsp_18_ephemeris_20170314.txt 22-Jun-2023 00:33 108164