| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/12/24 | 11 | 80 | DAI | S10W09 | |
| 2025/12/25 | 10 | 200 | DAI | S10W24 | |
| 2025/12/26 | 13 | 290 | DKI | S10W36 | |
| 2025/12/27 | 17 | 380 | DKC | S10W50 | |
| 2025/12/28 | 16 | 510 | DKC | S11W63 | |
| 2025/12/29 | 6 | 320 | DKC | S09W77 | |
| 2025/12/30 | 8 | 240 | DAC | S07W91 | |
| 2025/12/31 | 8 | 240 | DAC | S10W0* |
| C |
|---|
| 5 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.6 | 2025/12/30 | 08:35 | 08:43 | 08:49 | |
| 2 | C3.7 | 2025/12/29 | 22:26 | 22:30 | 22:37 | |
| 3 | C3.2 | 2025/12/28 | 08:09 | 08:20 | 08:34 | |
| 4 | C2.5 | 2025/12/27 | 10:24 | 10:29 | 10:36 | |
| 5 | C2.3 | 2025/12/25 | 06:00 | 06:09 | 06:16 |
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| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 118.7 -5.3 |
| Last 30 days | 120.4 +5.6 |