Solar flares on December 28, 2011
The most powerful solar flare in 24 hours
C7.2 (normal) flare - December 28 at 7:55 PM
Solar activity index
Value as of the end of the day on December 28, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2011 to December 28, 2011
Time zone — UTC+05:30 (Ranchi)
List of solar flares for December 28, 2011
The total number of solar flares of class C and higher — 12 flares
C class — 12 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.4 | 22:06 | 22:10 | 22:14 | 1387 |
| C3.1 | 21:33 | 21:40 | 21:55 | — |
| C7.2 | 19:47 | 19:55 | 19:58 | 1389 |
| C2.0 | 18:35 | 18:40 | 18:46 | — |
| C1.1 | 17:19 | 17:23 | 17:27 | — |
| C2.6 | 10:49 | 10:58 | 11:05 | 1389 |
| C4.5 | 09:00 | 09:20 | 09:40 | 1389 |
| C2.1 | 07:24 | 07:38 | 07:46 | 1389 |
| C2.3 | 05:44 | 06:00 | 06:10 | 1387 |
| C6.7 | 03:16 | 03:56 | 04:19 | — |
| C1.7 | 01:02 | 01:06 | 01:10 | — |
| C2.5 | 00:01 | 00:06 | 00:13 | 1387 |