Solar flares on September 30, 2026
The most powerful solar flare in 24 hours
C8.6 (normal) flare - September 30 at 2:46 AM
Solar activity index
Value as of the end of the day on September 30, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 29, 2026 to September 30, 2026
Time zone — UTC+00
List of solar flares for September 30, 2026
The total number of solar flares of class C and higher — 1 flare
C class — 1 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.6 | 02:30 | 02:46 | 03:05 | 4535 |