../ dmsp_15_ephemeris_20170217.txt 22-Jun-2023 00:33 108106 dmsp_16_ephemeris_20170217.txt 22-Jun-2023 00:33 108162 dmsp_17_ephemeris_20170217.txt 22-Jun-2023 00:33 107898 dmsp_18_ephemeris_20170217.txt 22-Jun-2023 00:33 108046