Solar flares on December 18, 2009
The most powerful solar flare in 24 hours
C7.6 (normal) flare - December 18 at 1:55 PM
Solar activity index
Value as of the end of the day on December 18, 2009
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 17, 2009 to December 18, 2009
Time zone — UTC-05 (Hamilton (Canada))
List of solar flares for December 18, 2009
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 |
|---|---|---|---|---|
| C2.9 | 19:10 | 19:14 | 19:17 | 1035 |
| C7.6 | 13:48 | 13:55 | 13:58 | 1035 |