Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Dec 17, 2021 and Dec 18, 2021 (GOES-16)
Solar flares on Dec 18, 2021
2 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C6.3 | 2807 | 17:27:00 | 18:01:00 | 18:36:00 |
| Flare of class C1.1 | 2909 | 01:40:00 | 01:54:00 | 02:12:00 |
Solar flares on Dec 17, 2021
10 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.3 | 0 | 22:22:00 | 22:30:00 | 22:36:00 |
| Flare of class C1.5 | 2911 | 17:39:00 | 17:53:00 | 18:08:00 |
| Flare of class C1.0 | 2907 | 14:22:00 | 14:30:00 | 14:39:00 |
| Flare of class C2.3 | 2909 | 12:55:00 | 13:12:00 | 13:25:00 |
| Flare of class C1.3 | 2911 | 06:18:00 | 06:25:00 | 06:30:00 |
| Flare of class C1.4 | 2911 | 05:06:00 | 05:10:00 | 05:15:00 |
| Flare of class C1.3 | 2911 | 04:50:00 | 04:58:00 | 05:03:00 |
| Flare of class C1.2 | 2911 | 04:01:00 | 04:08:00 | 04:12:00 |
| Flare of class C1.5 | 2911 | 03:25:00 | 03:31:00 | 03:41:00 |
| Flare of class M1.2 | 2911 | 00:39:00 | 00:51:00 | 00:56:00 |