Solar flares on January 20, 2001
The most powerful solar flare in 24 hours
M7.7 (strong) flare - January 20 at 11:20 PM
Solar activity index
Value as of the end of the day on January 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 19, 2001 to January 20, 2001
Time zone — UTC+02 (Bucharest)
List of solar flares for January 20, 2001
The total number of solar flares of class C and higher — 7 flares
C class — 5 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M7.7 | 23:06 | 23:20 | 23:32 | 9313 |
| M1.2 | 20:33 | 20:47 | 20:59 | 9313 |
| C1.0 | 16:28 | 16:31 | 16:35 | — |
| C1.49 | 10:49 | 10:56 | 11:00 | — |
| C1.0 | 05:13 | 05:17 | 05:20 | — |
| C1.1 | 03:57 | 04:01 | 04:03 | — |
| C1.3 | 02:05 | 02:16 | 02:23 | — |