Solar flares on December 31, 2011
The most powerful solar flare in 24 hours
M2.4 (strong) flare - December 31 at 6:45 PM
Solar activity index
Value as of the end of the day on December 31, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 30, 2011 to December 31, 2011
Time zone — UTC+05:30 (Ranchi)
List of solar flares for December 31, 2011
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 22:47 | 23:01 | 23:18 | 1386 |
| M1.5 | 21:46 | 21:56 | 22:04 | 1389 |
| M2.4 | 18:39 | 18:45 | 18:49 | 1389 |
| C1.6 | 04:58 | 05:03 | 05:08 | 1389 |
| C3.9 | 02:27 | 02:39 | 02:50 | 1389 |
| C4.4 | 01:43 | 01:54 | 02:01 | — |