Solar flares on July 20, 2003
The most powerful solar flare in 24 hours
C5.6 (normal) flare - July 20 at 7:08 PM
Solar activity index
Value as of the end of the day on July 20, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 19, 2003 to July 20, 2003
Time zone — UTC+03 (Bryansk)
List of solar flares for July 20, 2003
The total number of solar flares of class C and higher — 21 flares
C class — 21 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.4 | 22:04 | 22:11 | 22:25 | 410 |
| C3.1 | 21:06 | 21:11 | 21:17 | — |
| C3.6 | 20:53 | 20:58 | 21:01 | 410 |
| C3.9 | 20:22 | 20:26 | 20:36 | 410 |
| C3.7 | 19:41 | 19:47 | 19:53 | 410 |
| C5.6 | 19:01 | 19:08 | 19:19 | 410 |
| C1.8 | 18:49 | 18:54 | 18:57 | 410 |
| C3.7 | 17:48 | 17:52 | 17:54 | 410 |
| C2.1 | 15:00 | 15:06 | 15:23 | — |
| C1.7 | 14:52 | 14:55 | 14:57 | — |
| C2.4 | 12:45 | 13:02 | 13:08 | — |
| C2.0 | 11:33 | 11:36 | 11:38 | 417 |
| C2.5 | 11:19 | 11:23 | 11:28 | — |
| C1.4 | 09:19 | 09:25 | 09:35 | — |
| C1.2 | 08:18 | 08:23 | 08:26 | — |
| C1.1 | 07:36 | 07:39 | 07:43 | — |
| C3.9 | 06:48 | 06:56 | 07:10 | 410 |
| C2.8 | 04:09 | 04:15 | 04:22 | 410 |
| C1.8 | 03:26 | 03:30 | 03:34 | 410 |
| C1.7 | 01:53 | 01:58 | 02:04 | — |
| C3.0 | 01:19 | 01:25 | 01:30 | — |