Solar flares — Jun 21, 2026
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The strongest solar flare in the day
Flare of M6.8 level (strong) — in 20:29
Solar activity index
Value for Jun 21, 2026 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Jun 20, 2026 to Jun 21, 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 Jun 21, 2026
Total number of flares of class C and higher — 6 flares
C type — 4 | M type — 2 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
M6.8
|
20:17 | 20:29 | 20:35 | 4473 |
|
C2.6
|
19:07 | 19:18 | 19:21 | 4473 |
|
C1.1
|
09:31 | 09:38 | 09:41 | 4473 |
|
M2.6
|
03:25 | 03:46 | 03:58 | 4473 |
|
C1.1
|
02:01 | 02:06 | 02:14 | 4473 |
|
C1.3
|
00:01 | 00:06 | 00:12 | 4473 |