| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/09/20 | 2 | 30 | CSO | S11E67 | |
| 2025/09/21 | 1 | 60 | DSO | S10E57 | |
| 2025/09/22 | 6 | 180 | DSI | S11E45 | |
| 2025/09/23 | 12 | 170 | DSI | S10E32 | |
| 2025/09/24 | 15 | 220 | DSI | S11E18 | |
| 2025/09/25 | 13 | 220 | DAO | S11W29 | |
| 2025/09/26 | 9 | 130 | CAO | S10W07 | |
| 2025/09/27 | 8 | 90 | CAO | S10W21 | |
| 2025/09/28 | 5 | 130 | CAO | S11W35 | |
| 2025/09/29 | 3 | 70 | HSX | S11W34 | |
| 2025/09/30 | 2 | 90 | HSX | S09W62 | |
| 2025/10/01 | 2 | 90 | HSX | S09W76 | |
| 2025/10/02 | 2 | 90 | HSX | S09W90 | |
| 2025/10/03 | 2 | 90 | HSX | S09W0* |
| C | M |
|---|---|
| 11 | 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.68 | 2025/09/30 | 09:29 | 09:40 | 09:45 | |
| 2 | M1.2 | 2025/10/02 | 02:00 | 02:09 | 02:11 | |
| 3 | M1.1 | 2025/09/27 | 04:18 | 04:23 | 04:27 | |
| 4 | M1.0 | 2025/09/27 | 03:29 | 03:59 | 06:22 | |
| 5 | C8.0 | 2025/09/27 | 00:28 | 00:42 | 01:00 | |
| 6 | C7.2 | 2025/10/03 | 17:02 | 17:16 | 17:33 | |
| 7 | C6.1 | 2025/10/03 | 12:20 | 12:37 | 12:50 | |
| 8 | C5.5 | 2025/09/24 | 03:23 | 03:31 | 03:37 | |
| 9 | C5.3 | 2025/09/24 | 12:43 | 12:50 | 12:52 | |
| 10 | C4.6 | 2025/09/24 | 23:14 | 23:22 | 23:29 |
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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 | 119.1 -4.9 |
| Last 30 days | 122.3 +12.7 |