Solar flares on September 17, 2012
The most powerful solar flare in 24 hours
C2.1 (normal) flare - September 17 at 3:06 PM
Solar activity index
Value as of the end of the day on September 17, 2012
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 16, 2012 to September 17, 2012
Time zone — UTC+01 (London) — summer time
List of solar flares for September 17, 2012
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 14:50 | 15:06 | 15:13 | 1575 |
| C1.5 | 12:35 | 12:46 | 13:01 | 1575 |
| C1.1 | 10:04 | 10:08 | 10:10 | 1567 |