Solar flares — Dec 21, 2009
The strongest solar flare in the day
Flare of C2.5 level (normal) — in 07:17
Solar activity index
Value for Dec 21, 2009 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Dec 20, 2009 to Dec 21, 2009
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 21, 2009
Total number of flares of class C and higher — 2 flares
C type — 2 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.0
|
09:16 | 09:26 | 09:32 | — |
|
C2.5
|
07:09 | 07:17 | 07:22 | — |