| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/04/12 | 2 | 20 | CRO | N14E40 | |
| 2015/04/13 | 3 | 30 | DRO | N14E26 | |
| 2015/04/14 | 4 | 30 | DAO | N14E12 | |
| 2015/04/15 | 3 | 20 | BXO | N14W02 | |
| 2015/04/16 | 3 | 10 | BXO | N14W13 | |
| 2015/04/17 | 2 | 10 | BXO | N12W25 | |
| 2015/04/19 | 2 | 10 | HRX | N16W50 | |
| 2015/04/20 | 3 | 10 | BXO | N13W62 | |
| 2015/04/21 | 3 | 30 | CRO | N11W71 | |
| 2015/04/22 | 10 | 60 | DAC | N11W87 | |
| 2015/04/23 | 10 | 60 | DAC | N11W0* |
| C | M |
|---|---|
| 7 | 7 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M5.78 | 2015/04/21 | 15:24 | 15:45 | 15:51 | |
| 2 | M3.26 | 2015/04/21 | 11:49 | 11:57 | 12:02 | |
| 3 | M2.94 | 2015/04/21 | 16:55 | 17:00 | 17:09 | |
| 4 | M2.58 | 2015/04/21 | 21:39 | 21:45 | 21:55 | |
| 5 | M1.62 | 2015/04/23 | 09:18 | 10:07 | 11:10 | |
| 6 | M1.6 | 2015/04/22 | 08:30 | 08:44 | 08:58 | |
| 7 | M1.43 | 2015/04/21 | 07:08 | 07:21 | 07:27 | |
| 8 | C6.76 | 2015/04/13 | 08:21 | 08:26 | 08:28 | |
| 9 | C5.85 | 2015/04/22 | 03:14 | 03:25 | 03:34 | |
| 10 | C5.5 | 2015/04/22 | 07:59 | 08:06 | 08:21 |
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| 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 | 106.4 +13.7 |