Solar flares on December 21, 2015
The most powerful solar flare in 24 hours
M2.8 (strong) flare - December 21 at 10:03 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+09 (Lensk)
List of solar flares for December 21, 2015
The total number of solar flares of class C and higher — 12 flares
C class — 10 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 23:17 | 23:33 | 23:48 | 2473 |
| M1.1 | 19:09 | 19:19 | 19:32 | 2472 |
| C1.0 | 18:00 | 18:04 | 18:09 | 2472 |
| C1.7 | 17:25 | 17:29 | 17:31 | 2472 |
| C9.1 | 14:29 | 14:39 | 14:43 | 2472 |
| C2.0 | 13:50 | 13:58 | 14:04 | 2472 |
| C2.4 | 12:10 | 12:16 | 12:21 | 2472 |
| M2.8 | 09:52 | 10:03 | 10:11 | 2472 |
| C5.4 | 08:48 | 08:58 | 09:05 | — |
| C6.0 | 07:33 | 07:44 | 07:56 | — |
| C2.3 | 06:41 | 06:50 | 07:08 | — |
| C2.4 | 04:22 | 04:44 | 04:58 | 2468 |