Solar flares on January 20, 2005
The most powerful solar flare in 24 hours
X7.1 (very strong) flare - January 20 at 2:01 PM
Solar activity index
Value as of the end of the day on January 20, 2005
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 19, 2005 to January 20, 2005
Time zone — UTC+07 (Barnaul)
List of solar flares for January 20, 2005
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 0 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.0 | 23:08 | 23:14 | 23:19 | 720 |
| X7.1 | 13:36 | 14:01 | 14:26 | 720 |
| C4.8 | 10:21 | 10:30 | 10:36 | 720 |
| C1.6 | 07:37 | 07:47 | 07:56 | 720 |
| C5.3 | 06:18 | 06:24 | 06:29 | 723 |