Solar flares on September 28, 2021
The most powerful solar flare in 24 hours
C1.3 (normal) flare - September 28 at 7:18 PM
Solar activity index
Value as of the end of the day on September 28, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 27, 2021 to September 28, 2021
Time zone — UTC-07 (Prince george) — summer time
List of solar flares for September 28, 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 |
|---|---|---|---|---|
| C1.3 | 19:08 | 19:18 | 19:23 | 2880 |