Solar flares on September 21, 2000
The most powerful solar flare in 24 hours
C4.1 (normal) flare - September 21 at 6:28 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-03 (Halifax) — summer time
List of solar flares for September 21, 2000
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.9 | 12:57 | 13:13 | 13:28 | — |
| C2.5 | 10:44 | 11:03 | 11:16 | — |
| C4.1 | 06:08 | 06:28 | 06:57 | — |
| C2.9 | 00:45 | 00:53 | 01:07 | — |