Solar flares on September 21, 2016
The most powerful solar flare in 24 hours
C1.7 (normal) flare - September 21 at 12:51 PM
Solar activity index
Value as of the end of the day on September 21, 2016
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2016 to September 21, 2016
Time zone — UTC+01 (London) — summer time
List of solar flares for September 21, 2016
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 |
|---|---|---|---|---|
| C1.7 | 12:45 | 12:51 | 12:54 | 2595 |
| C1.6 | 11:23 | 11:39 | 12:19 | 2593 |