Solar flares on July 20, 2001
The most powerful solar flare in 24 hours
C3.0 (normal) flare - July 20 at 7:45 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-04 (Kitchener) — summer time
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 | 19:36 | 19:45 | 19:51 | — |
| C1.4 | 18:36 | 18:47 | 19:07 | — |
| C2.1 | 16:52 | 17:25 | 17:42 | 9543 |