| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2012/08/30 | 6 | 40 | DAO | N04E36 | |
| 2012/08/31 | 8 | 50 | DAO | N03E22 | |
| 2012/09/01 | 15 | 180 | DAI | N04E09 | |
| 2012/09/02 | 19 | 220 | DAI | N03W05 | |
| 2012/09/03 | 21 | 260 | EHI | N03W17 | |
| 2012/09/04 | 23 | 350 | EKI | N03W33 | |
| 2012/09/05 | 15 | 170 | EAI | N04W47 | |
| 2012/09/06 | 13 | 230 | EAI | N04W58 | |
| 2012/09/07 | 10 | 160 | EAI | N04W73 | |
| 2012/09/08 | 2 | 10 | BXO | N05W89 |
| C | M |
|---|---|
| 19 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.37 | 2012/09/06 | 04:06 | 04:13 | 04:20 | |
| 2 | M1.15 | 2012/09/06 | 15:13 | 15:21 | 15:30 | |
| 3 | C7.97 | 2012/09/02 | 18:00 | 18:10 | 18:15 | |
| 4 | C4.29 | 2012/08/31 | 07:13 | 07:21 | 07:27 | |
| 5 | C4.27 | 2012/09/02 | 01:50 | 01:58 | 02:10 | |
| 6 | C2.82 | 2012/09/06 | 01:51 | 02:06 | 02:15 | |
| 7 | C2.77 | 2012/08/31 | 09:04 | 10:04 | 10:19 | |
| 8 | C2.57 | 2012/09/06 | 03:11 | 03:16 | 03:20 | |
| 9 | C2.34 | 2012/09/07 | 00:17 | 00:28 | 00:36 | |
| 10 | C2.26 | 2012/08/31 | 04:08 | 04:12 | 04:16 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/03/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 74.8 -3.4 |
| Last 30 days | 52.1 -75.8 |