Solar flares — Dec 15, 2025
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The strongest solar flare in the day
Flare of C3.9 level (normal) — in 17:28
Solar activity index
Value for Dec 15, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Dec 14, 2025 to Dec 15, 2025
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 15, 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 | |
|---|---|---|---|---|
|
C3.9
|
17:20 | 17:28 | 17:49 | 4304 |
|
C2.0
|
12:21 | 12:25 | 12:34 | 4304 |
|
C1.3
|
11:52 | 12:05 | 12:15 | 4308 |
|
C1.4
|
03:02 | 03:16 | 03:24 | 4307 |
|
C1.8
|
01:40 | 01:48 | 01:56 | 4304 |
|
C1.9
|
01:20 | 01:29 | 01:34 | 4307 |