| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2005/09/18 | 1 | 50 | HSX | N10E78 | |
| 2005/09/19 | 8 | 170 | DAO | N10E69 | |
| 2005/09/20 | 9 | 180 | EAO | N10E51 | |
| 2005/09/21 | 13 | 250 | EAI | N10E37 | |
| 2005/09/22 | 9 | 210 | CAI | N08E21 | |
| 2005/09/23 | 18 | 230 | DKI | N09E07 | |
| 2005/09/24 | 25 | 250 | EKI | N09W06 | |
| 2005/09/25 | 10 | 190 | EKO | N08W19 | |
| 2005/09/26 | 5 | 150 | CAO | N08W35 | |
| 2005/09/27 | 3 | 140 | CHO | N08W49 | |
| 2005/09/28 | 1 | 190 | HSX | N08W62 | |
| 2005/09/29 | 1 | 180 | HAX | N08W74 | |
| 2005/09/30 | 1 | 150 | HAX | N08W89 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.24 | 2005/09/23 | 05:48 | 05:59 | 06:08 |
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/02 | M3.5 |
| Last geomagnetic storm | 2026/04/02 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| April 2026 | 141 +62.8 |
| Last 30 days | 94.6 +27 |