Solar flares on September 28, 2025
The most powerful solar flare in 24 hours
M6.4 (strong) flare - September 28 at 1:43 PM
Solar activity index
Value as of the end of the day on September 28, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 27, 2025 to September 28, 2025
Time zone — UTC+05 (Tyumen)
List of solar flares for September 28, 2025
The total number of solar flares of class C and higher — 13 flares
C class — 12 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.7 | 22:35 | 22:42 | 22:46 | 4232 |
| C3.5 | 21:38 | 21:46 | 21:50 | — |
| C3.6 | 19:35 | 19:40 | 19:48 | 4233 |
| C9.9 | 18:26 | 18:31 | 18:34 | 4233 |
| C9.0 | 18:12 | 18:24 | 18:26 | 4233 |
| C3.2 | 17:46 | 17:55 | 18:03 | 4233 |
| C3.6 | 16:29 | 16:42 | 16:55 | 4233 |
| C3.0 | 15:48 | 15:54 | 15:56 | 4232 |
| M6.4 | 13:34 | 13:43 | 13:49 | 4232 |
| C2.3 | 12:02 | 12:07 | 12:25 | 4233 |
| C2.8 | 05:52 | 06:01 | 06:10 | 4233 |
| C3.1 | 01:53 | 01:58 | 02:03 | 4233 |
| C5.4 | 00:44 | 00:54 | 01:01 | 4232 |