Solar flares on August 21, 2021
The most powerful solar flare in 24 hours
C1.2 (normal) flare - August 21 at 9:14 PM
Solar activity index
Value as of the end of the day on August 21, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 20, 2021 to August 21, 2021
Time zone — UTC-07 (Olympia) — summer time
List of solar flares for August 21, 2021
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 |
|---|---|---|---|---|
| C1.2 | 21:09 | 21:14 | 21:22 | 2859 |
| C1.0 | 17:43 | 17:52 | 17:56 | 2859 |