Solar flares on April 20, 2013
The most powerful solar flare in 24 hours
C3.6 (normal) flare - April 20 at 8:09 PM
Solar activity index
Value as of the end of the day on April 20, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 19, 2013 to April 20, 2013
Time zone — UTC-05 (Pierre) — summer time
List of solar flares for April 20, 2013
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 21:56 | 22:00 | 22:02 | 1726 |
| C3.6 | 20:02 | 20:09 | 20:16 | 1726 |
| C1.3 | 17:46 | 17:52 | 17:59 | 1726 |
| C1.1 | 17:24 | 17:29 | 17:33 | 1726 |
| C1.1 | 17:09 | 17:13 | 17:18 | 1726 |
| C1.0 | 12:08 | 12:16 | 12:24 | 1726 |
| C1.4 | 02:54 | 03:02 | 03:10 | 1726 |