Solar flares — Oct 20, 2021
The strongest solar flare in the day
Flare of B4.6 level () — in 21:46
Solar activity index
Value for Oct 20, 2021 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Oct 19, 2021 to Oct 20, 2021
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Oct 20, 2021
Total number of flares of class C and higher — 5 flares
C type — 0 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
B1.2
|
23:00 | 23:08 | 23:15 | — |
|
B4.6
|
21:34 | 21:46 | 21:58 | — |
|
B1.7
|
21:00 | 21:09 | 21:16 | — |
|
B1.0
|
19:57 | 20:04 | 20:10 | — |
|
B1.1
|
18:15 | 18:22 | 18:28 | — |