Solar flares on September 20, 2002
The most powerful solar flare in 24 hours
M1.8 (strong) flare - September 20 at 11:28 AM
Solar activity index
Value as of the end of the day on September 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2002 to September 20, 2002
Time zone — UTC+02 (Monaco) — summer time
List of solar flares for September 20, 2002
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 15:23 | 15:31 | 15:44 | — |
| C2.1 | 13:08 | 13:14 | 13:22 | 126 |
| M1.8 | 11:21 | 11:28 | 11:33 | 126 |
| C1.9 | 10:26 | 10:35 | 10:39 | 115 |
| M1.5 | 07:08 | 07:12 | 07:17 | 126 |
| C2.4 | 03:56 | 04:02 | 04:06 | 119 |