Solar flares on September 21, 2002
The most powerful solar flare in 24 hours
C3.0 (normal) flare - September 21 at 8:50 AM
Solar activity index
Value as of the end of the day on September 21, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2002 to September 21, 2002
Time zone — UTC+05:30 (Kalyan)
List of solar flares for September 21, 2002
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 22:26 | 22:33 | 22:40 | 119 |
| C1.1 | 20:25 | 20:29 | 20:33 | — |
| C1.5 | 13:25 | 13:29 | 13:41 | — |
| C2.4 | 09:05 | 09:08 | 09:11 | — |
| C3.0 | 08:42 | 08:50 | 08:56 | 121 |
| C2.5 | 04:56 | 05:04 | 05:18 | — |