Solar flares on December 18, 2021
The most powerful solar flare in 24 hours
C6.3 (normal) flare - December 18 at 9:01 PM
Solar activity index
Value as of the end of the day on December 18, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 17, 2021 to December 18, 2021
Time zone — UTC+03 (Nazran)
List of solar flares for December 18, 2021
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.3 | 20:27 | 21:01 | 21:36 | 2807 |
| C1.1 | 04:40 | 04:54 | 05:12 | 2909 |
| C1.3 | 01:22 | 01:30 | 01:36 | — |