../ dmsp_15_ephemeris_20130303.txt 22-Jun-2023 00:21 108125 dmsp_16_ephemeris_20130303.txt 22-Jun-2023 00:21 108147 dmsp_17_ephemeris_20130303.txt 22-Jun-2023 00:21 108226 dmsp_18_ephemeris_20130303.txt 22-Jun-2023 00:21 108173