Solar flares — May 21, 2011
The strongest solar flare in the day
Flare of B2.7 level () — in 19:30
Solar activity index
Value for May 21, 2011 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from May 20, 2011 to May 21, 2011
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for May 21, 2011
Total number of flares of class C and higher — 4 flares
C type — 0 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
B1.5
|
22:56 | 23:00 | 23:02 | — |
|
B2.7
|
19:25 | 19:30 | 19:33 | 1214 |
|
B1.1
|
16:06 | 16:21 | 16:30 | — |
|
B1.6
|
07:35 | 07:42 | 07:49 | 1214 |