Solar flares on July 28, 2025
The most powerful solar flare in 24 hours
C3.1 (normal) flare - July 28 at 4:14 AM
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+09:30 (Adelaide)
List of solar flares for July 28, 2025
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 12:45 | 12:51 | 12:54 | 4153 |
| C3.1 | 04:02 | 04:14 | 04:22 | 4161 |