../ dmsp_15_ephemeris_20170320.txt 22-Jun-2023 00:33 108035 dmsp_16_ephemeris_20170320.txt 22-Jun-2023 00:33 108128 dmsp_17_ephemeris_20170320.txt 22-Jun-2023 00:33 108269 dmsp_18_ephemeris_20170320.txt 22-Jun-2023 00:33 108266