Solar flares on December 17, 2021
The most powerful solar flare in 24 hours
M1.2 (strong) flare - December 17 at 3:51 AM
Solar activity index
Value as of the end of the day on December 17, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 16, 2021 to December 17, 2021
Time zone — UTC+03 (Saransk)
List of solar flares for December 17, 2021
The total number of solar flares of class C and higher — 10 flares
C class — 9 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 20:39 | 20:53 | 21:08 | 2911 |
| C1.0 | 17:22 | 17:30 | 17:39 | 2907 |
| C2.3 | 15:55 | 16:12 | 16:25 | 2909 |
| C1.3 | 09:18 | 09:25 | 09:30 | 2911 |
| C1.4 | 08:06 | 08:10 | 08:15 | 2911 |
| C1.3 | 07:50 | 07:58 | 08:03 | 2911 |
| C1.2 | 07:01 | 07:08 | 07:12 | 2911 |
| C1.5 | 06:25 | 06:31 | 06:41 | 2911 |
| M1.2 | 03:39 | 03:51 | 03:56 | 2911 |
| C3.0 | 02:35 | 02:39 | 02:43 | 2909 |