Solar flares on December 21, 2015
The most powerful solar flare in 24 hours
M1.6 (strong) flare - December 21 at 10:34 PM
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-05 (Granby)
List of solar flares for December 21, 2015
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.6 | 22:15 | 22:34 | 22:48 | 2473 |
| C3.3 | 18:38 | 19:14 | 19:38 | 2473 |
| C1.1 | 17:23 | 17:26 | 17:28 | 2470 |
| C6.2 | 13:08 | 13:27 | 13:42 | 2473 |
| C1.3 | 10:39 | 11:37 | 11:41 | 2473 |
| C2.1 | 09:17 | 09:33 | 09:48 | 2473 |
| M1.1 | 05:09 | 05:19 | 05:32 | 2472 |
| C1.0 | 04:00 | 04:04 | 04:09 | 2472 |
| C1.7 | 03:25 | 03:29 | 03:31 | 2472 |
| C9.1 | 00:29 | 00:39 | 00:43 | 2472 |