../ dmsp_15_ephemeris_20170131.txt 22-Jun-2023 16:24 108067 dmsp_16_ephemeris_20170131.txt 22-Jun-2023 16:24 108209 dmsp_17_ephemeris_20170131.txt 22-Jun-2023 16:24 108071 dmsp_18_ephemeris_20170131.txt 22-Jun-2023 16:24 108064