Solar flares on December 20, 2013
The most powerful solar flare in 24 hours
M1.6 (strong) flare - December 20 at 11:57 AM
Solar activity index
Value as of the end of the day on December 20, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 19, 2013 to December 20, 2013
Time zone — UTC+00
List of solar flares for December 20, 2013
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.7 | 21:08 | 21:16 | 21:23 | — |
| C2.3 | 17:11 | 17:14 | 17:19 | 1928 |
| C5.4 | 16:23 | 16:30 | 16:34 | 1928 |
| C8.5 | 15:26 | 15:33 | 15:39 | 1928 |
| C3.2 | 14:52 | 15:04 | 15:15 | 1928 |
| M1.6 | 11:35 | 11:57 | 12:07 | 1934 |
| C2.2 | 11:05 | 11:11 | 11:18 | 1934 |
| C1.5 | 04:45 | 04:48 | 04:53 | — |
| C2.2 | 02:53 | 02:58 | 03:02 | — |