Solar flares on December 21, 2023
The most powerful solar flare in 24 hours
M4.2 (strong) flare - December 21 at 6:38 AM
Solar activity index
Value as of the end of the day on December 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 20, 2023 to December 21, 2023
Time zone — UTC+01 (Brussels)
List of solar flares for December 21, 2023
The total number of solar flares of class C and higher — 12 flares
C class — 11 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.0 | 22:14 | 22:21 | 22:25 | 3529 |
| C2.0 | 21:22 | 21:30 | 21:40 | 3519 |
| C1.8 | 21:03 | 21:10 | 21:22 | 3519 |
| C4.1 | 20:03 | 20:07 | 20:12 | 3526 |
| C3.1 | 18:52 | 19:03 | 19:10 | 3519 |
| C2.1 | 17:16 | 17:25 | 17:36 | 3524 |
| C2.1 | 13:16 | 13:21 | 13:29 | 3528 |
| C2.2 | 11:15 | 11:25 | 11:29 | 3521 |
| C2.2 | 11:04 | 11:10 | 11:15 | 3521 |
| M4.2 | 06:19 | 06:38 | 06:49 | 3519 |
| C3.9 | 03:14 | 03:18 | 03:22 | 3529 |
| C5.4 | 01:01 | 01:06 | 01:10 | 3529 |