Solar flares on December 20, 2024
The most powerful solar flare in 24 hours
M3.8 (strong) flare - December 20 at 2:34 AM
Solar activity index
Value as of the end of the day on December 20, 2024
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 19, 2024 to December 20, 2024
Time zone — UTC+11 (Melbourne) — summer time
List of solar flares for December 20, 2024
The total number of solar flares of class C and higher — 18 flares
C class — 14 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.5 | 22:15 | 22:18 | 22:22 | 3928 |
| C2.9 | 21:34 | 21:38 | 21:43 | 3928 |
| C9.4 | 21:03 | 21:11 | 21:17 | 3932 |
| C9.4 | 19:55 | 20:01 | 20:06 | 3928 |
| M2.1 | 18:20 | 18:26 | 18:35 | 3924 |
| C3.0 | 17:54 | 18:04 | 18:14 | 3924 |
| C2.7 | 16:43 | 16:46 | 16:51 | 3928 |
| C2.6 | 12:54 | 13:01 | 13:08 | — |
| C2.6 | 12:33 | 12:40 | 12:44 | 3928 |
| C3.4 | 08:25 | 08:33 | 08:40 | 3924 |
| C3.1 | 08:14 | 08:23 | 08:25 | 3924 |
| M1.7 | 05:56 | 06:00 | 06:04 | 3928 |
| C7.2 | 04:46 | 05:10 | 05:27 | 3924 |
| C5.9 | 04:02 | 04:16 | 04:25 | — |
| M3.8 | 02:27 | 02:34 | 02:39 | 3928 |
| C5.9 | 02:03 | 02:07 | 02:11 | 3928 |
| C7.6 | 01:25 | 01:32 | 01:40 | 3928 |
| C7.1 | 00:43 | 00:52 | 01:00 | 3928 |