Solar flares on July 20, 2001
The most powerful solar flare in 24 hours
C3.0 (normal) flare - July 20 at 11:45 PM
Solar activity index
Value as of the end of the day on July 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 19, 2001 to July 20, 2001
Time zone — UTC+00
List of solar flares for July 20, 2001
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 23:36 | 23:45 | 23:51 | — |
| C1.4 | 22:36 | 22:47 | 23:07 | — |
| C2.1 | 20:52 | 21:25 | 21:42 | 9543 |