Solar flares on December 21, 2013
The most powerful solar flare in 24 hours
C9.2 (normal) flare - December 21 at 4:06 PM
Solar activity index
Value as of the end of the day on December 21, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 20, 2013 to December 21, 2013
Time zone — UTC+05:30 (Pune)
List of solar flares for December 21, 2013
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.8 | 22:31 | 22:36 | 22:43 | — |
| C1.7 | 20:17 | 20:22 | 20:27 | 1928 |
| C9.2 | 15:57 | 16:06 | 16:14 | 1928 |
| C3.5 | 08:26 | 08:33 | 08:38 | 1928 |
| C3.0 | 05:36 | 05:43 | 05:48 | 1928 |
| C2.7 | 02:38 | 02:46 | 02:53 | — |