Solar flares on December 28, 2025
The most powerful solar flare in 24 hours
C9.8 (normal) flare - December 28 at 1:33 AM
Solar activity index
Value as of the end of the day on December 28, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2025 to December 28, 2025
Time zone — UTC+03 (Oryol)
List of solar flares for December 28, 2025
The total number of solar flares of class C and higher — 9 flares
C class — 9 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.0 | 22:17 | 23:08 | 23:40 | 4325 |
| C2.9 | 18:02 | 18:09 | 18:16 | 4325 |
| C2.8 | 14:57 | 15:08 | 15:21 | 4324 |
| C3.2 | 11:09 | 11:20 | 11:34 | 4321 |
| C4.0 | 10:22 | 10:28 | 10:35 | 4324 |
| C3.3 | 08:57 | 09:08 | 09:10 | 4324 |
| C2.6 | 08:35 | 08:39 | 08:57 | 4324 |
| C9.8 | 01:14 | 01:33 | 01:50 | 4317 |
| C2.4 | 00:43 | 00:48 | 00:55 | 4324 |