Solar flares on September 21, 2000
The most powerful solar flare in 24 hours
C4.1 (normal) flare - September 21 at 11:28 AM
Solar activity index
Value as of the end of the day on September 21, 2000
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2000 to September 21, 2000
Time zone — UTC+02 (Prague) — summer time
List of solar flares for September 21, 2000
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 |
|---|---|---|---|---|
| C2.9 | 17:57 | 18:13 | 18:28 | — |
| C2.5 | 15:44 | 16:03 | 16:16 | — |
| C4.1 | 11:08 | 11:28 | 11:57 | — |
| C2.9 | 05:45 | 05:53 | 06:07 | — |
| C3.0 | 03:50 | 04:05 | 04:10 | 9169 |
| C2.1 | 03:22 | 03:34 | 03:40 | — |