Sunspot region AR12917
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/12/22 | 2 | 10 | BXO | S26E30 | |
| 2021/12/23 | 7 | 30 | CRO | S27E16 | |
| 2021/12/24 | 9 | 50 | CRO | S28E05 | |
| 2021/12/25 | 5 | 20 | CRO | S28W06 | |
| 2021/12/29 | 1 | 10 | AXX | S26W62 | |
| 2021/12/30 | 1 | 10 | AXX | S27W75 | |
| 2021/12/31 | 1 | 10 | AXX | S27W90 |
2021/12/22
2021/12/23
2021/12/24
2021/12/25
2021/12/29
2021/12/30
2021/12/31
|
2021/12/22
2021/12/23
2021/12/24
2021/12/25
2021/12/29
2021/12/30
2021/12/31
|
| B | C |
|---|---|
| 1 | 7 |
The top 8 solar flares from sunspot region 12917
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C7.5 | 2021/12/24 | 03:25 | 03:42 | 03:50 | |
| 2 | C3.1 | 2021/12/25 | 15:47 | 15:58 | 16:08 | |
| 3 | C1.9 | 2021/12/23 | 13:26 | 13:31 | 13:36 | |
| 4 | C1.8 | 2021/12/25 | 07:13 | 07:26 | 07:49 | |
| 5 | C1.4 | 2021/12/23 | 13:16 | 13:22 | 13:26 | |
| 6 | C1.4 | 2021/12/27 | 04:06 | 04:20 | 04:33 | |
| 7 | C1.3 | 2021/12/27 | 09:45 | 09:53 | 09:59 | |
| 8 | B9.9 | 2021/12/26 | 21:36 | 21:44 | 21:52 |
Latest news
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Tuesday, 11 November 2025
X5.1 solar flare, G4 geomagnetic storm watch
Latest forum messages
AR4294 / 4296 / 4298 300AR 4299 24Current Farside Activity 236Unspecified geomagnetic activity 40Space Weather Memes 760
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |