Viewing archive of Sunday, 21 September 2025 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C |
|---|---|---|---|---|
| 157 2 | 1 -1 | C1.29 | C6.64 | 10 |
Sunspot regions
Region 14216 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 1 | 70 -20 | CSO | N11W59 | |
|
||||
Region 14217 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 10 1 | 210 -20 | EAO | S17W19 | |
|
||||
Solar flares on this day | ||||
| C2.4 C1.6 C2.1 | ||||
Region 14219 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N24W98 | |
|
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Region 14220 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 20 1 | 300 10 | EKI | S18W55 | |
|
||||
Solar flares on this day | ||||
| C2.8 C2.1 C2.3 | ||||
Region 14221 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 1 | 90 30 | CSO | N04W25 | |
|
||||
Region 14223 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -3 | 10 -30 | AXX | S17W07 | |
|
||||
Solar flares on this day | ||||
| C6.6 | ||||
Region 14224 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 3 | 50 20 | DAI | S10W25 | |
|
||||
Solar flares on this day | ||||
| C3.3 | ||||
Region 14225 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 220 10 | DAO | N09E13 | |
|
||||
Region 14226 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 60 30 | DSO | S10E57 | |
|
||||
Region 14227 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -1 | 80 50 | CAO | S19E53 | |
|
||||
Region 14228 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | HSX | N04E66 | |
|
||||
Solar flares on this day | ||||
| C1.6 | ||||
All times in UTC
Latest news
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 133.3 +47.4 |
| Last 30 days | 96.9 +35.1 |
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