Solar flares on December 28, 2021
The most powerful solar flare in 24 hours
M1.6 (strong) flare - December 28 at 9:11 AM
Solar activity index
Value as of the end of the day on December 28, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2021 to December 28, 2021
Time zone — UTC-07 (Edmonton)
List of solar flares for December 28, 2021
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.6 | 21:18 | 21:28 | 21:32 | 2916 |
| M1.6 | 08:59 | 09:11 | 09:20 | 2918 |
| C1.0 | 08:03 | 08:14 | 08:32 | 2918 |
| C7.0 | 00:29 | 00:44 | 00:57 | 2918 |