Solar flares on July 20, 2003
The most powerful solar flare in 24 hours
C5.6 (normal) flare - July 20 at 12:08 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-04 (Quebec) — summer time
List of solar flares for July 20, 2003
The total number of solar flares of class C and higher — 26 flares
C class — 26 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.3 | 23:39 | 23:47 | 23:53 | — |
| C1.4 | 23:19 | 23:28 | 23:36 | — |
| C3.3 | 22:19 | 22:28 | 22:34 | 410 |
| C1.3 | 21:50 | 21:55 | 21:58 | — |
| C1.5 | 21:18 | 21:24 | 21:37 | — |
| C1.2 | 21:09 | 21:12 | 21:15 | — |
| C3.2 | 20:28 | 20:35 | 20:41 | 410 |
| C1.8 | 20:04 | 20:08 | 20:21 | 417 |
| C1.6 | 19:37 | 19:41 | 19:44 | — |
| C2.7 | 17:03 | 17:08 | 17:14 | 410 |
| C4.4 | 15:04 | 15:11 | 15:25 | 410 |
| C3.1 | 14:06 | 14:11 | 14:17 | — |
| C3.6 | 13:53 | 13:58 | 14:01 | 410 |
| C3.9 | 13:22 | 13:26 | 13:36 | 410 |
| C3.7 | 12:41 | 12:47 | 12:53 | 410 |
| C5.6 | 12:01 | 12:08 | 12:19 | 410 |
| C1.8 | 11:49 | 11:54 | 11:57 | 410 |
| C3.7 | 10:48 | 10:52 | 10:54 | 410 |
| C2.1 | 08:00 | 08:06 | 08:23 | — |
| C1.7 | 07:52 | 07:55 | 07:57 | — |
| C2.4 | 05:45 | 06:02 | 06:08 | — |
| C2.0 | 04:33 | 04:36 | 04:38 | 417 |
| C2.5 | 04:19 | 04:23 | 04:28 | — |
| C1.4 | 02:19 | 02:25 | 02:35 | — |
| C1.2 | 01:18 | 01:23 | 01:26 | — |
| C1.1 | 00:36 | 00:39 | 00:43 | — |