Solar flares on December 28, 2025
The most powerful solar flare in 24 hours
M1.3 (strong) flare - December 28 at 11:13 PM
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+02 (Athens)
List of solar flares for December 28, 2025
The total number of solar flares of class C and higher — 10 flares
C class — 9 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.8 | 23:48 | 23:53 | 23:56 | 4318 |
| M1.3 | 23:03 | 23:13 | 23:23 | 4325 |
| C4.0 | 21:17 | 22:08 | 22:40 | 4325 |
| C2.9 | 17:02 | 17:09 | 17:16 | 4325 |
| C2.8 | 13:57 | 14:08 | 14:21 | 4324 |
| C3.2 | 10:09 | 10:20 | 10:34 | 4321 |
| C4.0 | 09:22 | 09:28 | 09:35 | 4324 |
| C3.3 | 07:57 | 08:08 | 08:10 | 4324 |
| C2.6 | 07:35 | 07:39 | 07:57 | 4324 |
| C9.8 | 00:14 | 00:33 | 00:50 | 4317 |