| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2017/04/29 | 2 | 10 | AXX | N10E52 | |
| 2017/04/30 | 1 | 10 | AXX | N11E38 | |
| 2017/05/01 | 1 | 10 | AXX | N11E25 | |
| 2017/05/03 | 4 | 60 | DAO | N11E01 | |
| 2017/05/04 | 5 | 70 | DSO | N12W12 | |
| 2017/05/05 | 5 | 80 | DSO | N11W25 | |
| 2017/05/06 | 5 | 40 | CSO | N11W38 | |
| 2017/05/07 | 1 | 30 | HSX | N11W53 | |
| 2017/05/08 | 1 | 20 | HSX | N11W66 | |
| 2017/05/09 | 1 | 20 | AXX | N11W82 |
| A | B |
|---|---|
| 1 | 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B4.67 | 2017/05/06 | 19:55 | 20:09 | 20:23 | |
| 2 | B2 | 2017/05/05 | 14:23 | 14:28 | 14:36 | |
| 3 | B1.76 | 2017/05/05 | 06:09 | 06:14 | 06:18 | |
| 4 | B1.41 | 2017/05/02 | 19:33 | 19:36 | 19:41 | |
| 5 | A9.69 | 2017/05/06 | 18:27 | 18:31 | 18:34 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/31 | M7.2 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| Last 30 days | 116.4 +22.7 |