| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/01/20 | 3 | 60 | CAO | S17E49 | |
| 2021/01/21 | 4 | 40 | CAO | S16W54 | |
| 2021/01/22 | 5 | 20 | CRO | S16E19 | |
| 2021/01/23 | 1 | 10 | AXX | S16E04 |
| B | C |
|---|---|
| 35 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.4 | 2021/01/20 | 12:35 | 12:53 | 12:59 | |
| 2 | C1.0 | 2021/01/19 | 17:46 | 17:54 | 17:59 | |
| 3 | B8.7 | 2021/01/20 | 12:27 | 12:48 | 13:08 | |
| 4 | B7.0 | 2021/01/20 | 01:03 | 01:13 | 01:18 | |
| 5 | B7.0 | 2021/01/20 | 10:01 | 10:11 | 10:23 | |
| 6 | B5.4 | 2021/01/21 | 09:47 | 09:59 | 10:05 | |
| 7 | B4.1 | 2021/01/19 | 20:25 | 20:41 | 20:45 | |
| 8 | B3.9 | 2021/01/21 | 02:02 | 02:28 | 02:46 | |
| 9 | B3.3 | 2021/01/21 | 10:27 | 10:30 | 10:36 | |
| 10 | B3.1 | 2021/01/20 | 17:29 | 17:33 | 17:39 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |