../ dmsp_15_ephemeris_20130308.txt 22-Jun-2023 00:21 108126 dmsp_16_ephemeris_20130308.txt 22-Jun-2023 00:21 108093 dmsp_17_ephemeris_20130308.txt 22-Jun-2023 00:21 108101 dmsp_18_ephemeris_20130308.txt 22-Jun-2023 00:21 108181