Solar flares on December 28, 2004
The most powerful solar flare in 24 hours
C7.2 (normal) flare - December 28 at 6:01 PM
Solar activity index
Value as of the end of the day on December 28, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2004 to December 28, 2004
Time zone — UTC+00
List of solar flares for December 28, 2004
The total number of solar flares of class C and higher — 11 flares
C class — 11 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.5 | 20:51 | 20:57 | 20:59 | 713 |
| C1.9 | 20:25 | 20:29 | 20:32 | 715 |
| C7.2 | 17:41 | 18:01 | 18:28 | 715 |
| C4.1 | 15:45 | 15:55 | 16:00 | 713 |
| C4.3 | 12:28 | 12:35 | 12:40 | 713 |
| C1.1 | 10:43 | 10:51 | 10:57 | 713 |
| C3.5 | 09:11 | 09:18 | 09:25 | 713 |
| C1.1 | 09:01 | 09:06 | 09:10 | 713 |
| C2.4 | 06:28 | 06:31 | 06:34 | 713 |
| C2.3 | 06:00 | 06:09 | 06:13 | 713 |
| C7.2 | 00:04 | 00:10 | 00:12 | 713 |