Solar flares on July 20, 2004
The most powerful solar flare in 24 hours
M8.6 (strong) flare - July 20 at 8:32 AM
Solar activity index
Value as of the end of the day on July 20, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 19, 2004 to July 20, 2004
Time zone — UTC-04 (Hamilton (Canada)) — summer time
List of solar flares for July 20, 2004
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.1 | 17:09 | 17:23 | 17:34 | 652 |
| C3.8 | 14:15 | 14:21 | 14:28 | 652 |
| M8.6 | 08:22 | 08:32 | 08:45 | 652 |
| C6.0 | 07:01 | 07:26 | 07:37 | 652 |
| C2.3 | 02:31 | 02:48 | 03:02 | — |
| C1.6 | 02:18 | 02:22 | 02:24 | — |
| C1.4 | 00:53 | 00:57 | 01:00 | 652 |
| C2.3 | 00:11 | 00:23 | 00:30 | 652 |