Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Apr 20, 2021 and Apr 21, 2021 (GOES-16)
Solar flares on Apr 21, 2021
1 solar flare was observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.5 | 2817 | 01:18:00 | 01:29:00 | 01:41:00 |
Solar flares on Apr 20, 2021
1 solar flare was observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.9 | 2814 | 11:51:00 | 12:15:00 | 12:38:00 |