| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/05/16 | 3 | 30 | DRO | N16E50 | |
| 2025/05/17 | 6 | 30 | DRO | N17E40 | |
| 2025/05/18 | 4 | 20 | CRO | N15E28 | |
| 2025/05/19 | 6 | 20 | BXI | N18E16 | |
| 2025/05/20 | 5 | 10 | BXO | N18E01 | |
| 2025/05/21 | 4 | 20 | BXO | N18W12 |
| B | C |
|---|---|
| 6 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.3 | 2025/05/16 | 03:48 | 04:03 | 04:15 | |
| 2 | C1.1 | 2025/05/18 | 18:13 | 18:28 | 18:37 | |
| 3 | B9.2 | 2025/05/16 | 07:17 | 07:29 | 07:38 | |
| 4 | B9.2 | 2025/05/17 | 13:51 | 14:06 | 14:19 | |
| 5 | B9.1 | 2025/05/19 | 22:18 | 22:25 | 22:31 | |
| 6 | B8.8 | 2025/05/16 | 08:21 | 08:30 | 08:41 | |
| 7 | B8.5 | 2025/05/17 | 09:56 | 10:10 | 10:19 | |
| 8 | B7.5 | 2025/05/16 | 08:42 | 08:45 | 08:48 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| 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 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |