Solar flares on September 18, 2011
The most powerful solar flare in 24 hours
C3.8 (normal) flare - September 18 at 4:27 PM
Solar activity index
Value as of the end of the day on September 18, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 17, 2011 to September 18, 2011
Time zone — UTC+05:30 (Ranchi)
List of solar flares for September 18, 2011
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 |
|---|---|---|---|---|
| C2.0 | 21:18 | 21:22 | 21:28 | 1295 |
| C3.8 | 15:18 | 16:27 | 17:07 | 1295 |
| C2.9 | 13:02 | 13:05 | 13:07 | 1301 |
| C1.2 | 09:29 | 09:32 | 09:35 | — |
| C1.6 | 06:56 | 07:00 | 07:02 | — |