Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Aug 20, 2012 and Aug 21, 2012 (GOES-15)
Solar flares on Aug 21, 2012
No solar flares of C, M and X-class were observed
Solar flares on Aug 20, 2012
No solar flares of C, M and X-class were observed