Solar flares on October 28, 2025
The most powerful solar flare in 24 hours
C1.6 (normal) flare - October 28 at 11:26 AM
Solar activity index
Value as of the end of the day on October 28, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 27, 2025 to October 28, 2025
Time zone — UTC-05 (Des Moines) — summer time
List of solar flares for October 28, 2025
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 |
|---|---|---|---|---|
| C1.6 | 11:17 | 11:26 | 11:30 | 4267 |