Solar flares on September 21, 2021
The most powerful solar flare in 24 hours
C1.8 (normal) flare - September 21 at 11:53 AM
Solar activity index
Value as of the end of the day on September 21, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2021 to September 21, 2021
Time zone — UTC+00
List of solar flares for September 21, 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 |
|---|---|---|---|---|
| C1.1 | 18:18 | 18:28 | 18:35 | 2871 |
| C1.8 | 11:43 | 11:53 | 11:57 | 2873 |
| C1.1 | 08:53 | 09:03 | 09:16 | 2873 |