Solar flares on April 20, 2013
The most powerful solar flare in 24 hours
C1.5 (normal) flare - April 20 at 1:36 AM
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+01 (London) — summer time
List of solar flares for April 20, 2013
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 23:46 | 23:52 | 23:59 | 1726 |
| C1.1 | 23:24 | 23:29 | 23:33 | 1726 |
| C1.1 | 23:09 | 23:13 | 23:18 | 1726 |
| C1.0 | 18:08 | 18:16 | 18:24 | 1726 |
| C1.4 | 08:54 | 09:02 | 09:10 | 1726 |
| C1.1 | 04:27 | 04:48 | 05:02 | 1726 |
| C1.4 | 03:26 | 03:31 | 03:33 | 1726 |
| C1.5 | 01:22 | 01:36 | 01:38 | 1726 |