Solar flares on September 28, 2025
The most powerful solar flare in 24 hours
M6.4 (strong) flare - September 28 at 2:13 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+05:30 (Kanpur)
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 | 23:05 | 23:12 | 23:16 | 4232 |
| C3.5 | 22:08 | 22:16 | 22:20 | — |
| C3.6 | 20:05 | 20:10 | 20:18 | 4233 |
| C9.9 | 18:56 | 19:01 | 19:04 | 4233 |
| C9.0 | 18:42 | 18:54 | 18:56 | 4233 |
| C3.2 | 18:16 | 18:25 | 18:33 | 4233 |
| C3.6 | 16:59 | 17:12 | 17:25 | 4233 |
| C3.0 | 16:18 | 16:24 | 16:26 | 4232 |
| M6.4 | 14:04 | 14:13 | 14:19 | 4232 |
| C2.3 | 12:32 | 12:37 | 12:55 | 4233 |
| C2.8 | 06:22 | 06:31 | 06:40 | 4233 |
| C3.1 | 02:23 | 02:28 | 02:33 | 4233 |
| C5.4 | 01:14 | 01:24 | 01:31 | 4232 |