Solar flares on December 9, 2025
The most powerful solar flare in 24 hours
M3.1 (strong) flare - December 9 at 12:17 AM
Solar activity index
Value as of the end of the day on December 9, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 8, 2025 to December 9, 2025
Time zone — UTC+03 (Cheboksary)
List of solar flares for December 9, 2025
The total number of solar flares of class C and higher — 23 flares
C class — 17 | M class — 6 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.9 | 21:51 | 22:12 | 22:31 | 4294 |
| C3.8 | 20:18 | 20:24 | 20:27 | 4294 |
| C3.8 | 20:10 | 20:15 | 20:18 | 4294 |
| C3.7 | 19:52 | 20:02 | 20:10 | 4294 |
| M1.5 | 18:00 | 18:14 | 18:20 | 4294 |
| C5.6 | 16:27 | 16:35 | 16:43 | 4294 |
| C4.8 | 16:15 | 16:25 | 16:27 | 4294 |
| C3.9 | 15:35 | 15:41 | 15:55 | 4294 |
| C6.0 | 14:58 | 15:06 | 15:10 | 4294 |
| C4.0 | 14:48 | 14:55 | 14:58 | 4294 |
| C2.7 | 14:29 | 14:42 | 14:48 | 4294 |
| C4.2 | 12:56 | 13:04 | 13:08 | 4294 |
| M1.6 | 10:41 | 10:47 | 10:51 | 4294 |
| C3.1 | 08:32 | 08:39 | 08:43 | — |
| C2.5 | 05:34 | 05:36 | 05:39 | — |
| C8.0 | 04:47 | 04:52 | 04:55 | 4294 |
| M1.1 | 04:34 | 04:38 | 04:42 | 4294 |
| M2.0 | 03:37 | 03:58 | 04:17 | 4299 |
| C4.6 | 03:19 | 03:30 | 03:37 | 4299 |
| C2.6 | 02:48 | 02:59 | 03:03 | 4298 |
| M1.2 | 01:04 | 01:28 | 01:45 | 4299 |
| M3.1 | 00:13 | 00:17 | 00:25 | 4294 |
| C3.7 | 23:59 | 00:06 | 00:13 | 4294 |