Solar flares — Apr 21, 2023
The strongest solar flare in the day
Flare of M1.7 level (strong) — in 18:12
Solar activity index
Value for Apr 21, 2023 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 20, 2023 to Apr 21, 2023
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 21, 2023
Total number of flares of class C and higher — 5 flares
C type — 2 | M type — 1 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C4.0
|
22:12 | 22:23 | 22:30 | 3279 |
|
M1.7
|
17:44 | 18:12 | 18:44 | 3283 |
|
B9.7
|
06:59 | 07:07 | 07:14 | — |
|
B9.4
|
05:59 | 06:04 | 06:11 | — |
|
C1.1
|
02:07 | 02:14 | 02:18 | — |