Solar flares on October 20, 2013
The most powerful solar flare in 24 hours
C2.9 (normal) flare - October 20 at 10:40 AM
Solar activity index
Value as of the end of the day on October 20, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2013 to October 20, 2013
Time zone — UTC+02 (Zagreb) — summer time
List of solar flares for October 20, 2013
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 20:09 | 20:48 | 21:07 | 1873 |
| C2.0 | 14:41 | 14:45 | 14:50 | 1868 |
| C2.9 | 10:33 | 10:40 | 10:46 | 1868 |
| C2.0 | 01:09 | 01:30 | 01:46 | 1861 |