../ dmsp_15_ephemeris_20180826.txt 22-Jun-2023 00:38 109593 dmsp_16_ephemeris_20180826.txt 22-Jun-2023 00:38 109558 dmsp_17_ephemeris_20180826.txt 22-Jun-2023 00:38 109796 dmsp_18_ephemeris_20180826.txt 22-Jun-2023 00:38 109685