Solar flares — Dec 28, 2025
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The strongest solar flare in the day
Flare of C4.0 level (normal) — in 07:28
Solar activity index
Value for Dec 28, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Dec 27, 2025 to Dec 28, 2025
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 28, 2025
Total number of flares of class C and higher — 6 flares
C type — 6 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C2.9
|
15:02 | 15:09 | 15:16 | 4325 |
|
C2.8
|
11:57 | 12:08 | 12:21 | 4324 |
|
C3.2
|
08:09 | 08:20 | 08:34 | 4321 |
|
C4.0
|
07:22 | 07:28 | 07:35 | 4324 |
|
C3.3
|
05:57 | 06:08 | 06:10 | 4324 |
|
C2.6
|
05:35 | 05:39 | 05:57 | 4324 |