Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Sep 20, 2012 and Sep 21, 2012 (GOES-15)
Solar flares on Sep 21, 2012
No solar flares of C, M and X-class were observed
Solar flares on Sep 20, 2012
1 solar flare was observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.0 | 1574 | 11:27:00 | 11:39:00 | 11:52:00 |