../ dmsp_15_ephemeris_20170916.txt 22-Jun-2023 00:35 109613 dmsp_16_ephemeris_20170916.txt 22-Jun-2023 00:35 109653 dmsp_17_ephemeris_20170916.txt 22-Jun-2023 00:35 109765 dmsp_18_ephemeris_20170916.txt 22-Jun-2023 00:35 109618