Solar flares — December 21, 2025
The strongest solar flare in the day
Flare of M1.3 level (strong) — in 13:27
Solar activity index
Value for Dec 21, 2025 24:00 (end on the day) . The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Dec 20, 2025 to Dec 21, 2025
Time zone — UTC-05 (Fermont)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 21, 2025
Total number of flares of class C and higher – 15 flares
C type — 14 | M type — 1 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.6
|
20:04 | 20:15 | 20:20 | 4317 |
|
C2.3
|
19:22 | 19:30 | 19:34 | 4316 |
|
C2.0
|
18:25 | 18:30 | 18:34 | 4316 |
|
C2.2
|
17:28 | 17:34 | 17:37 | 4316 |
|
C3.1
|
16:57 | 17:12 | 17:19 | 4316 |
|
C6.2
|
15:51 | 16:01 | 16:07 | — |
|
C4.0
|
15:16 | 15:24 | 15:32 | 4316 |
|
C6.1
|
14:51 | 15:00 | 15:03 | — |
|
C3.9
|
14:29 | 14:43 | 14:51 | 4316 |
|
M1.3
|
13:12 | 13:27 | 13:36 | 4316 |
|
C2.6
|
11:47 | 12:03 | 12:27 | 4316 |
|
C1.4
|
10:52 | 10:58 | 11:05 | 4316 |
|
C1.3
|
07:47 | 07:56 | 08:01 | 4315 |
|
C1.3
|
07:11 | 07:23 | 07:29 | 4317 |
|
C1.3
|
06:54 | 07:03 | 07:11 | 4316 |