Solar flares on December 18, 2021
The most powerful solar flare in 24 hours
C6.3 (normal) flare - December 18 at 1:01 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-05 (Jacksonville)
List of solar flares for December 18, 2021
The total number of solar flares of class C and higher — 1 flare
C class — 1 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.3 | 12:27 | 13:01 | 13:36 | 2807 |