Solar flares on September 27, 2026
The most powerful solar flare in 24 hours
C1.9 (normal) flare - September 27 at 4:37 AM
Solar activity index
Value as of the end of the day on September 27, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 26, 2026 to September 27, 2026
Time zone — UTC+00
List of solar flares for September 27, 2026
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 18:58 | 19:05 | 19:09 | 4535 |
| C1.2 | 15:54 | 16:01 | 16:07 | 4535 |
| C1.9 | 04:31 | 04:37 | 04:44 | — |
| C1.1 | 02:43 | 02:46 | 02:48 | 4534 |
| C1.1 | 02:12 | 02:22 | 02:28 | 4536 |