Solar flares on December 17, 2011
The most powerful solar flare in 24 hours
C3.2 (normal) flare - December 17 at 10:55 PM
Solar activity index
Value as of the end of the day on December 17, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 16, 2011 to December 17, 2011
Time zone — UTC+00 (London)
List of solar flares for December 17, 2011
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 |
|---|---|---|---|---|
| C1.2 | 23:37 | 23:44 | 23:49 | 1381 |
| C3.2 | 22:47 | 22:55 | 22:58 | 1376 |
| C1.2 | 04:49 | 05:01 | 05:08 | 1376 |