Solar flares on December 21, 2012
The most powerful solar flare in 24 hours
C1.9 (normal) flare - December 21 at 10:05 PM
Solar activity index
Value as of the end of the day on December 21, 2012
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 20, 2012 to December 21, 2012
Time zone — UTC-06 (Dallas)
List of solar flares for December 21, 2012
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.9 | 21:57 | 22:05 | 22:09 | 1635 |
| C1.9 | 17:52 | 17:55 | 18:00 | 1635 |