| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/12/25 | 1 | 30 | HSX | N35E75 | |
| 1999/12/26 | 5 | 150 | ESO | N36E64 | |
| 1999/12/27 | 8 | 350 | EKO | N36E54 | |
| 1999/12/28 | 11 | 410 | FKO | N38E44 | |
| 1999/12/29 | 11 | 400 | FKO | N38E32 | |
| 1999/12/30 | 17 | 350 | FKO | N37E19 | |
| 1999/12/31 | 16 | 320 | FAO | N37E06 | |
| 2000/01/01 | 16 | 330 | FAO | N38W05 | |
| 2000/01/02 | 11 | 270 | FAO | N38W18 | |
| 2000/01/03 | 7 | 180 | EAO | N37W29 | |
| 2000/01/04 | 4 | 160 | ESO | N38W42 | |
| 2000/01/05 | 3 | 170 | FSO | N38W51 | |
| 2000/01/06 | 3 | 140 | ESO | N38W65 | |
| 2000/01/07 | 3 | 120 | FSO | N38W78 | |
| 2000/01/08 | 2 | 40 | HAX | N38W83 |
| C |
|---|
| 5 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.81 | 1999/12/26 | 08:46 | 09:02 | 09:26 | |
| 2 | C2.9 | 2000/01/04 | 11:09 | 11:14 | 11:19 | |
| 3 | C1.67 | 2000/01/04 | 14:28 | 14:42 | 14:54 | |
| 4 | C1.54 | 1999/12/30 | 06:32 | 06:36 | 06:39 | |
| 5 | C1.38 | 1999/12/28 | 09:18 | 09:21 | 09:23 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/29 | M1.0 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 117.2 +25.4 |
| Last 30 days | 117.2 +30.3 |