../ dmsp_15_ephemeris_20200228.txt 22-Jun-2023 00:43 108150 dmsp_16_ephemeris_20200228.txt 22-Jun-2023 00:43 108163 dmsp_17_ephemeris_20200228.txt 22-Jun-2023 00:43 108151 dmsp_18_ephemeris_20200228.txt 22-Jun-2023 00:43 108133