Solar flares on October 20, 2001
The most powerful solar flare in 24 hours
M3.3 (strong) flare - October 20 at 4:55 AM
Solar activity index
Value as of the end of the day on October 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2001 to October 20, 2001
Time zone — UTC+05:30 (Jaipur)
List of solar flares for October 20, 2001
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.1 | 12:30 | 12:39 | 12:55 | 9670 |
| C7.3 | 05:41 | 05:58 | 06:12 | — |
| M3.3 | 04:44 | 04:55 | 05:03 | 9658 |
| C3.9 | 03:06 | 03:32 | 03:39 | 9658 |
| C4.1 | 02:28 | 02:33 | 02:38 | 9658 |