Solar flares on May 20, 2013
The most powerful solar flare in 24 hours
M1.7 (strong) flare - May 20 at 6:25 AM
Solar activity index
Value as of the end of the day on May 20, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 19, 2013 to May 20, 2013
Time zone — UTC+01 (London) — summer time
List of solar flares for May 20, 2013
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 23:27 | 23:30 | 23:33 | 1748 |
| C1.6 | 21:02 | 21:10 | 21:18 | 1753 |
| C1.3 | 20:14 | 20:18 | 20:29 | 1748 |
| C6.0 | 17:20 | 17:26 | 17:30 | 1748 |
| C9.6 | 15:59 | 16:06 | 16:10 | 1748 |
| C2.7 | 15:21 | 15:28 | 15:32 | 1748 |
| M1.7 | 06:16 | 06:25 | 07:03 | 1755 |
| C4.0 | 01:41 | 01:47 | 01:53 | 1748 |