Solar flares on September 27, 2011
The most powerful solar flare in 24 hours
C6.4 (normal) flare - September 27 at 9:58 PM
Solar activity index
Value as of the end of the day on September 27, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 26, 2011 to September 27, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for September 27, 2011
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 23:45 | 23:50 | 23:54 | — |
| C6.4 | 21:44 | 21:58 | 22:11 | 1302 |
| C1.1 | 19:05 | 19:10 | 19:22 | 1302 |
| C1.3 | 12:42 | 12:47 | 12:51 | — |
| C1.8 | 11:49 | 11:54 | 11:57 | — |
| C2.4 | 09:05 | 09:13 | 09:21 | 1302 |
| C3.3 | 08:40 | 08:47 | 08:54 | 1302 |
| C1.1 | 02:18 | 02:21 | 02:24 | — |