Solar flares — Sep 22, 2025
The strongest solar flare in the day
Flare of C4.2 level (normal) — in 17:09
Solar activity index
Value for Sep 22, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 21, 2025 to Sep 22, 2025
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Sep 22, 2025
Total number of flares of class C and higher — 2 flares
C type — 2 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C4.2
|
16:58 | 17:09 | 17:18 | — |
|
C1.7
|
08:08 | 08:16 | 08:21 | 4217 |