X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Jul 20, 2017 and Jul 21, 2017 (GOES-15)
Solar flares on Jul 21, 2017
No solar flares of C, M and X-class were observed
Solar flares on Jul 20, 2017
No solar flares of C, M and X-class were observed