Solar flares — Apr 17, 2026
The strongest solar flare in the day
Flare of C4.1 level (normal) — in 05:42
Solar activity index
Value for Apr 17, 2026 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 16, 2026 to Apr 17, 2026
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 17, 2026
Total number of flares of class C and higher — 2 flares
C type — 2 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C4.1
|
05:27 | 05:42 | 06:02 | 4419 |
|
C1.04
|
00:51 | 01:22 | 01:32 | — |