| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/12/20 | 2 | 50 | DAO | N13E73 | |
| 2025/12/21 | 15 | 120 | CAO | N12E60 | |
| 2025/12/22 | 10 | 240 | EAI | N11E49 | |
| 2025/12/23 | 15 | 260 | EKI | N10E36 | |
| 2025/12/24 | 12 | 220 | EAI | N11E20 | |
| 2025/12/25 | 12 | 240 | EAI | N12E07 | |
| 2025/12/26 | 9 | 230 | EAI | N11W06 | |
| 2025/12/27 | 7 | 250 | EKC | N12W21 | |
| 2025/12/28 | 6 | 110 | DAO | N12W34 | |
| 2025/12/29 | 5 | 200 | CSO | N12W50 | |
| 2025/12/30 | 7 | 200 | DSO | N12W62 | |
| 2025/12/31 | 5 | 160 | CAO | N11W76 | |
| 2026/01/01 | 1 | 30 | HSX | N11W89 | |
| 2026/01/02 | 1 | 30 | HSX | N11W0* |
| C | M |
|---|---|
| 23 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M4.24 | 2025/12/28 | 22:01 | 22:39 | 22:54 | |
| 2 | C9.8 | 2025/12/27 | 22:14 | 22:33 | 22:50 | |
| 3 | C8.9 | 2025/12/29 | 02:58 | 03:05 | 03:10 | |
| 4 | C8.6 | 2025/12/22 | 22:21 | 22:31 | 22:56 | |
| 5 | C6.4 | 2025/12/29 | 20:36 | 20:40 | 20:43 | |
| 6 | C5.5 | 2026/01/02 | 02:45 | 02:55 | 02:59 | |
| 7 | C4.9 | 2025/12/24 | 10:07 | 10:21 | 11:13 | |
| 8 | C4.5 | 2025/12/27 | 07:44 | 07:58 | 08:16 | |
| 9 | C3.9 | 2026/01/01 | 18:46 | 18:55 | 19:05 | |
| 10 | C2.8 | 2025/12/20 | 19:48 | 19:55 | 19:58 |
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| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/02/01 | M1.9 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| Last 30 days | 119.2 +2.7 |