| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/05/19 | 1 | 30 | HSX | S14E66 | |
| 2025/05/20 | 1 | 50 | HSX | S13E52 | |
| 2025/05/21 | 1 | 50 | HSX | S13E38 | |
| 2025/05/22 | 1 | 60 | HSX | S13E25 | |
| 2025/05/23 | 1 | 60 | HSX | S13E13 | |
| 2025/05/24 | 1 | 110 | HSX | S13W01 | |
| 2025/05/25 | 1 | 110 | HSX | S13W15 | |
| 2025/05/26 | 1 | 110 | HSX | S13W28 | |
| 2025/05/27 | 1 | 110 | HSX | S13W42 | |
| 2025/05/28 | 1 | 110 | HSX | S13W55 | |
| 2025/05/29 | 3 | 120 | CSO | S13W69 | |
| 2025/05/30 | 1 | 120 | HSX | S13W82 | |
| 2025/05/31 | 1 | 120 | HSX | S13W96 |
| B | C |
|---|---|
| 2 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.5 | 2025/05/18 | 23:03 | 23:18 | 23:33 | |
| 2 | B8.8 | 2025/05/18 | 22:09 | 22:19 | 22:25 | |
| 3 | B8.4 | 2025/05/18 | 16:36 | 16:42 | 16:45 |
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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 |