Solar flares on January 21, 2005
The most powerful solar flare in 24 hours
M1.7 (strong) flare - January 21 at 8:46 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+10:30 (Adelaide) — summer time
List of solar flares for January 21, 2005
The total number of solar flares of class C and higher — 11 flares
C class — 10 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 22:37 | 22:42 | 22:46 | 719 |
| M1.7 | 20:40 | 20:46 | 20:49 | 720 |
| C1.7 | 19:35 | 19:42 | 19:48 | 719 |
| C1.3 | 18:51 | 19:05 | 19:10 | 719 |
| C1.8 | 17:11 | 17:16 | 17:19 | 720 |
| C1.6 | 17:00 | 17:06 | 17:08 | 720 |
| C6.3 | 14:47 | 14:57 | 15:04 | 720 |
| C5.8 | 10:49 | 10:54 | 10:56 | 720 |
| C4.5 | 08:17 | 08:23 | 08:26 | 720 |
| C3.6 | 04:43 | 04:46 | 04:49 | 720 |
| C8.0 | 02:38 | 02:44 | 02:49 | 720 |