Solar flares on December 20, 2013
The most powerful solar flare in 24 hours
M3.5 (strong) flare - December 20 at 2:19 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+03 (Moscow)
List of solar flares for December 20, 2013
The total number of solar flares of class C and higher — 9 flares
C class — 7 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.3 | 20:11 | 20:14 | 20:19 | 1928 |
| C5.4 | 19:23 | 19:30 | 19:34 | 1928 |
| C8.5 | 18:26 | 18:33 | 18:39 | 1928 |
| C3.2 | 17:52 | 18:04 | 18:15 | 1928 |
| M1.6 | 14:35 | 14:57 | 15:07 | 1934 |
| C2.2 | 14:05 | 14:11 | 14:18 | 1934 |
| C1.5 | 07:45 | 07:48 | 07:53 | — |
| C2.2 | 05:53 | 05:58 | 06:02 | — |
| M3.5 | 02:06 | 02:19 | 02:26 | 1934 |