Solar flares on September 20, 2003
The most powerful solar flare in 24 hours
C3.6 (normal) flare - September 20 at 11:36 AM
Solar activity index
Value as of the end of the day on September 20, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2003 to September 20, 2003
Time zone — UTC-04 (Augusta) — summer time
List of solar flares for September 20, 2003
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 22:26 | 22:30 | 22:32 | 464 |
| C1.1 | 20:25 | 20:28 | 20:31 | 464 |
| C1.4 | 20:03 | 20:08 | 20:13 | 464 |
| C2.3 | 18:57 | 19:10 | 19:19 | 464 |
| C2.0 | 17:29 | 17:36 | 17:43 | — |
| C3.6 | 11:24 | 11:36 | 11:57 | — |
| C1.3 | 06:34 | 07:45 | 08:16 | — |
| C1.7 | 02:30 | 02:45 | 03:05 | — |
| C3.0 | 01:03 | 01:12 | 01:15 | — |
| C1.1 | 00:38 | 00:48 | 00:52 | — |