Solar flares on January 21, 2005
The most powerful solar flare in 24 hours
M1.7 (strong) flare - January 21 at 1:16 PM
Solar activity index
Value as of the end of the day on January 21, 2005
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 20, 2005 to January 21, 2005
Time zone — UTC+03 (Volgograd)
List of solar flares for January 21, 2005
The total number of solar flares of class C and higher — 12 flares
C class — 10 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.6 | 23:43 | 23:49 | 23:55 | 720 |
| C1.6 | 20:05 | 20:11 | 20:14 | 720 |
| M1.2 | 16:47 | 16:55 | 17:10 | 719 |
| C1.3 | 15:07 | 15:12 | 15:16 | 719 |
| M1.7 | 13:10 | 13:16 | 13:19 | 720 |
| C1.7 | 12:05 | 12:12 | 12:18 | 719 |
| C1.3 | 11:21 | 11:35 | 11:40 | 719 |
| C1.8 | 09:41 | 09:46 | 09:49 | 720 |
| C1.6 | 09:30 | 09:36 | 09:38 | 720 |
| C6.3 | 07:17 | 07:27 | 07:34 | 720 |
| C5.8 | 03:19 | 03:24 | 03:26 | 720 |
| C4.5 | 00:47 | 00:53 | 00:56 | 720 |