Solar flares — Apr 20, 2011
The strongest solar flare in the day
Flare of C4.0 level (normal) — in 20:39
Solar activity index
Value for Apr 20, 2011 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 19, 2011 to Apr 20, 2011
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 20, 2011
Total number of flares of class C and higher — 3 flares
C type — 3 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C4.0
|
20:30 | 20:39 | 20:49 | 1195 |
|
C1.5
|
18:38 | 19:36 | 20:06 | — |
|
C1.0
|
04:46 | 05:31 | 05:49 | 1195 |