Solar flares on September 23, 2011
The most powerful solar flare in 24 hours
M1.6 (strong) flare - September 23 at 7:29 AM
Solar activity index
Value as of the end of the day on September 23, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 22, 2011 to September 23, 2011
Time zone — UTC+05:30 (Ranchi)
List of solar flares for September 23, 2011
The total number of solar flares of class C and higher — 10 flares
C class — 9 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 23:41 | 23:52 | 00:05 | — |
| C2.1 | 20:31 | 20:36 | 20:38 | 1302 |
| C3.2 | 17:40 | 17:53 | 18:10 | 1296 |
| C6.9 | 14:10 | 14:20 | 14:50 | 1295 |
| C2.7 | 13:43 | 13:49 | 14:03 | 1295 |
| M1.6 | 07:17 | 07:29 | 07:40 | 1295 |
| C9.6 | 05:59 | 06:03 | 06:07 | — |
| C4.1 | 05:21 | 05:26 | 05:32 | 1295 |
| C5.5 | 03:51 | 04:00 | 04:06 | 1295 |
| C4.0 | 01:44 | 01:50 | 02:03 | 1295 |