../ dmsp_15_ephemeris_20170130.txt 22-Jun-2023 00:33 108072 dmsp_16_ephemeris_20170130.txt 22-Jun-2023 00:33 108017 dmsp_17_ephemeris_20170130.txt 22-Jun-2023 00:33 107894 dmsp_18_ephemeris_20170130.txt 22-Jun-2023 00:33 107953