Solar flares on December 21, 2021
The most powerful solar flare in 24 hours
M1.4 (strong) flare - December 21 at 4:44 PM
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 (Dushanbe)
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 |
|---|---|---|---|---|
| C4.9 | 22:35 | 22:50 | 23:04 | 2908 |
| C2.0 | 20:44 | 20:53 | 20:58 | 2916 |
| C1.0 | 18:45 | 18:52 | 19:00 | 2908 |
| M1.4 | 16:31 | 16:44 | 16:49 | 2916 |
| M1.1 | 12:43 | 12:50 | 12:57 | 2916 |
| C4.9 | 12:06 | 12:22 | 12:34 | 2908 |
| C4.0 | 10:58 | 11:10 | 11:19 | 2908 |
| C3.3 | 09:48 | 10:00 | 10:09 | 2908 |
| C2.8 | 08:40 | 08:44 | 08:52 | 2908 |
| C5.5 | 06:44 | 06:57 | 07:12 | 2907 |
| C1.1 | 03:47 | 03:54 | 04:04 | — |
| C1.6 | 01:45 | 01:49 | 01:55 | — |
| C1.4 | 01:23 | 01:32 | 01:41 | — |