Solar flares on December 21, 2015
The most powerful solar flare in 24 hours
M2.8 (strong) flare - December 21 at 1:03 AM
Solar activity index
Value as of the end of the day on December 21, 2015
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 20, 2015 to December 21, 2015
Time zone — UTC+00 (London)
List of solar flares for December 21, 2015
The total number of solar flares of class C and higher — 11 flares
C class — 9 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 22:23 | 22:26 | 22:28 | 2470 |
| C6.2 | 18:08 | 18:27 | 18:42 | 2473 |
| C1.3 | 15:39 | 16:37 | 16:41 | 2473 |
| C2.1 | 14:17 | 14:33 | 14:48 | 2473 |
| M1.1 | 10:09 | 10:19 | 10:32 | 2472 |
| C1.0 | 09:00 | 09:04 | 09:09 | 2472 |
| C1.7 | 08:25 | 08:29 | 08:31 | 2472 |
| C9.1 | 05:29 | 05:39 | 05:43 | 2472 |
| C2.0 | 04:50 | 04:58 | 05:04 | 2472 |
| C2.4 | 03:10 | 03:16 | 03:21 | 2472 |
| M2.8 | 00:52 | 01:03 | 01:11 | 2472 |