Solar flares on December 18, 2023
The most powerful solar flare in 24 hours
C6.5 (normal) flare - December 18 at 2:22 PM
Solar activity index
Value as of the end of the day on December 18, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 17, 2023 to December 18, 2023
Time zone — UTC+00
List of solar flares for December 18, 2023
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 | 20:27 | 20:36 | 20:42 | 3526 |
| C4.5 | 19:15 | 19:25 | 19:30 | 3528 |
| C4.4 | 15:06 | 15:21 | 15:26 | — |
| C6.5 | 14:13 | 14:22 | 14:30 | 3528 |
| C4.2 | 03:57 | 04:08 | 04:21 | 3526 |
| C2.1 | 03:35 | 03:40 | 03:49 | 3519 |
| C6.0 | 02:44 | 02:55 | 03:00 | 3524 |
| C2.1 | 01:23 | 01:28 | 01:33 | 3514 |
| C2.2 | 00:23 | 00:26 | 00:31 | 3519 |