Solar flares on July 21, 2004
The most powerful solar flare in 24 hours
C8.9 (normal) flare - July 21 at 2:21 PM
Solar activity index
Value as of the end of the day on July 21, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2004 to July 21, 2004
Time zone — UTC+09 (Yakutsk)
List of solar flares for July 21, 2004
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.9 | 14:05 | 14:21 | 14:33 | 652 |
| C8.1 | 06:09 | 06:23 | 06:34 | 652 |
| C3.8 | 03:15 | 03:21 | 03:28 | 652 |