Solar flares on May 20, 2001
The most powerful solar flare in 24 hours
M6.4 (strong) flare - May 20 at 2:03 AM
Solar activity index
Value as of the end of the day on May 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 19, 2001 to May 20, 2001
Time zone — UTC-04 (Windsor) — summer time
List of solar flares for May 20, 2001
The total number of solar flares of class C and higher — 9 flares
C class — 7 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.0 | 23:11 | 23:20 | 23:25 | 9461 |
| C1.3 | 15:30 | 15:40 | 15:45 | — |
| C2.9 | 10:32 | 10:41 | 10:46 | — |
| C1.1 | 07:50 | 07:54 | 08:03 | — |
| C6.1 | 07:35 | 07:40 | 07:43 | — |
| C1.0 | 06:31 | 06:35 | 06:42 | — |
| M1.5 | 05:12 | 05:20 | 05:23 | — |
| M6.4 | 02:00 | 02:03 | 02:06 | — |
| C2.5 | 01:43 | 01:48 | 01:54 | — |