Solar flares on December 20, 2011
The most powerful solar flare in 24 hours
C6.2 (normal) flare - December 20 at 6:50 PM
Solar activity index
Value as of the end of the day on December 20, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 19, 2011 to December 20, 2011
Time zone — UTC-04 (Moncton)
List of solar flares for December 20, 2011
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.1 | 22:57 | 23:12 | 23:16 | 1382 |
| C1.5 | 20:54 | 20:59 | 21:03 | 1376 |
| C6.2 | 18:38 | 18:50 | 19:04 | 1376 |
| C2.3 | 17:55 | 18:02 | 18:06 | — |
| C2.9 | 16:04 | 16:36 | 16:57 | 1376 |
| C1.4 | 14:17 | 14:21 | 14:28 | — |
| C2.1 | 07:47 | 07:52 | 07:54 | 1376 |