Solar flares on December 27, 2025
The most powerful solar flare in 24 hours
M5.1 (strong) flare - December 27 at 1:50 AM
Solar activity index
Value as of the end of the day on December 27, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 26, 2025 to December 27, 2025
Time zone — UTC+00
List of solar flares for December 27, 2025
The total number of solar flares of class C and higher — 11 flares
C class — 10 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.8 | 22:14 | 22:33 | 22:50 | 4317 |
| C2.4 | 21:43 | 21:48 | 21:55 | 4324 |
| C2.9 | 15:35 | 15:50 | 16:09 | 4325 |
| C3.2 | 14:11 | 14:15 | 14:19 | 4324 |
| C3.7 | 13:22 | 13:29 | 13:32 | 4324 |
| C2.5 | 10:24 | 10:29 | 10:36 | 4321 |
| C4.5 | 07:44 | 07:58 | 08:16 | 4317 |
| C2.8 | 06:40 | 06:47 | 06:50 | 4324 |
| C3.7 | 05:32 | 05:39 | 05:41 | 4324 |
| M5.1 | 01:38 | 01:50 | 01:59 | 4325 |
| C4.8 | 00:23 | 00:32 | 00:38 | 4324 |