Solar flares on September 20, 2015
The most powerful solar flare in 24 hours
M2.1 (strong) flare - September 20 at 7:03 PM
Solar activity index
Value as of the end of the day on September 20, 2015
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2015 to September 20, 2015
Time zone — UTC+01 (London) — summer time
List of solar flares for September 20, 2015
The total number of solar flares of class C and higher — 4 flares
C class — 2 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.1 | 18:32 | 19:03 | 19:29 | 2415 |
| C1.4 | 15:09 | 15:14 | 15:24 | 2415 |
| C2.6 | 10:32 | 10:34 | 10:36 | 2415 |
| M1.5 | 05:55 | 06:03 | 06:17 | 2420 |