Solar flares on October 21, 2023
The most powerful solar flare in 24 hours
C2.8 (normal) flare - October 21 at 12:30 AM
Solar activity index
Value as of the end of the day on October 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 20, 2023 to October 21, 2023
Time zone — UTC+00
List of solar flares for October 21, 2023
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 12:02 | 12:10 | 12:17 | 3464 |
| C2.8 | 00:00 | 00:30 | 00:59 | 3467 |