../ dmsp_15_ephemeris_20180402.txt 22-Jun-2023 16:27 108175 dmsp_16_ephemeris_20180402.txt 22-Jun-2023 16:27 108272 dmsp_17_ephemeris_20180402.txt 22-Jun-2023 16:27 108181 dmsp_18_ephemeris_20180402.txt 22-Jun-2023 16:27 108124