Solar flares on July 28, 2025
The most powerful solar flare in 24 hours
C3.1 (normal) flare - July 28 at 11:11 PM
Solar activity index
Value as of the end of the day on July 28, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 27, 2025 to July 28, 2025
Time zone — UTC-06 (Saskatoon)
List of solar flares for July 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 |
|---|---|---|---|---|
| C3.1 | 23:00 | 23:11 | 23:21 | 4155 |