Solar flares — May 21, 2026
The strongest solar flare in the day
Flare of C9.5 level (normal) — in 14:25
Solar activity index
Value for May 21, 2026 24:00 (end on the day) . The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from May 20, 2026 to May 21, 2026
Time zone — UTC-04 (Tallahassee) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for May 21, 2026
Total number of flares of class C and higher – 8 flares
C type — 8 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.9
|
23:23 | 23:34 | 23:49 | 4436 |
|
C2.8
|
20:22 | 20:32 | 20:48 | 4436 |
|
C1.3
|
19:04 | 19:10 | 19:15 | 4436 |
|
C1.2
|
15:41 | 15:58 | 16:35 | 4443 |
|
C9.5
|
14:19 | 14:25 | 14:30 | 4436 |
|
C8.3
|
14:04 | 14:14 | 14:19 | 4436 |
|
C1.0
|
12:29 | 12:37 | 12:40 | — |
|
C5.5
|
09:09 | 09:21 | 09:24 | 4436 |