Solar flares on January 20, 2005
The most powerful solar flare in 24 hours
X7.1 (very strong) flare - January 20 at 12:01 AM
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 (Phoenix)
List of solar flares for January 20, 2005
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 0 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 23:41 | 23:46 | 23:49 | 720 |
| C1.6 | 23:30 | 23:36 | 23:38 | 720 |
| C6.3 | 21:17 | 21:27 | 21:34 | 720 |
| C5.8 | 17:19 | 17:24 | 17:26 | 720 |
| C4.5 | 14:47 | 14:53 | 14:56 | 720 |
| C3.6 | 11:13 | 11:16 | 11:19 | 720 |
| C8.0 | 09:08 | 09:14 | 09:19 | 720 |
| X7.1 | 23:36 | 00:01 | 00:26 | 720 |