GOES - X-ray flare-like events Daily summary from 20130918 2013 to 20130919 1012 (YYYYMMDD hhmm UT) date start-end time class log10(X) (YYYYMMDD) (hhmm UT) 20130919 0808 - 0820 C -5.7375 Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.