Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Aug 20, 2021 and Aug 21, 2021 (GOES-16)
Solar flares on Aug 21, 2021
No solar flares of C, M and X-class were observed
Solar flares on Aug 20, 2021
4 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.4 | 2859 | 21:30:00 | 22:00:00 | 22:14:00 |
| Flare of class C2.3 | 2859 | 16:41:00 | 16:49:00 | 16:59:00 |
| Flare of class C3.0 | 2859 | 15:50:00 | 15:57:00 | 16:01:00 |
| Flare of class C1.7 | 2859 | 15:45:00 | 15:48:00 | 15:50:00 |