Solar flares on December 21, 2021
The most powerful solar flare in 24 hours
M1.4 (strong) flare - December 21 at 6:44 AM
Solar activity index
Value as of the end of the day on December 21, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 20, 2021 to December 21, 2021
Time zone — UTC-05 (Salluit)
List of solar flares for December 21, 2021
The total number of solar flares of class C and higher — 13 flares
C class — 11 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 23:36 | 23:46 | 23:56 | 2907 |
| C5.7 | 19:12 | 19:21 | 19:29 | — |
| C4.9 | 17:29 | 17:37 | 18:08 | — |
| C3.9 | 15:36 | 15:48 | 16:00 | — |
| C4.9 | 14:02 | 14:23 | 14:53 | 2909 |
| C4.9 | 12:35 | 12:50 | 13:04 | 2908 |
| C2.0 | 10:44 | 10:53 | 10:58 | 2916 |
| C1.0 | 08:45 | 08:52 | 09:00 | 2908 |
| M1.4 | 06:31 | 06:44 | 06:49 | 2916 |
| M1.1 | 02:43 | 02:50 | 02:57 | 2916 |
| C4.9 | 02:06 | 02:22 | 02:34 | 2908 |
| C4.0 | 00:58 | 01:10 | 01:19 | 2908 |
| C3.3 | 23:48 | 00:00 | 00:09 | 2908 |