Solar flares on September 21, 2024
The most powerful solar flare in 24 hours
C4.4 (normal) flare - September 21 at 3:46 PM
Solar activity index
Value as of the end of the day on September 21, 2024
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2024 to September 21, 2024
Time zone — UTC-05 (Chicago) — summer time
List of solar flares for September 21, 2024
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.4 | 15:37 | 15:46 | 15:50 | 3831 |
| C1.6 | 08:35 | 08:41 | 08:46 | 3831 |
| C2.0 | 02:05 | 02:16 | 02:35 | — |