GOES - X-ray flare-like events Daily summary from 20130815 1957 to 20130816 1012 (YYYYMMDD hhmm UT) date start-end time class log10(X) (YYYYMMDD) (hhmm UT) 20130815 2212 - 2225 C -5.5346 Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.