Solar flares on September 12, 2025
The most powerful solar flare in 24 hours
C1.4 (normal) flare - September 12 at 6:00 PM
Solar activity index
Value as of the end of the day on September 12, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 11, 2025 to September 12, 2025
Time zone — UTC-05 (Jackson) — summer time
List of solar flares for September 12, 2025
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 18:38 | 18:44 | 19:17 | 4213 |
| C1.4 | 17:49 | 18:00 | 18:12 | 4207 |