Solar flares on September 21, 2000
The most powerful solar flare in 24 hours
C4.1 (normal) flare - September 21 at 2:28 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-07 (Phoenix)
List of solar flares for September 21, 2000
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 21:27 | 21:43 | 22:00 | — |
| C1.7 | 21:15 | 21:18 | 21:21 | — |
| C2.9 | 08:57 | 09:13 | 09:28 | — |
| C2.5 | 06:44 | 07:03 | 07:16 | — |
| C4.1 | 02:08 | 02:28 | 02:57 | — |