Solar flares on September 12, 2025
The most powerful solar flare in 24 hours
C1.8 (normal) flare - September 12 at 1:18 AM
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+05:30 (Thane)
List of solar flares for September 12, 2025
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 03:46 | 03:59 | 04:23 | 4216 |
| C1.8 | 01:07 | 01:18 | 01:33 | 4216 |
| C1.0 | 00:46 | 00:54 | 00:58 | 4213 |
| C1.2 | 00:28 | 00:33 | 00:37 | 4207 |