Solar flares on July 17, 2025
The most powerful solar flare in 24 hours
C5.9 (normal) flare - July 17 at 10:28 AM
Solar activity index
Value as of the end of the day on July 17, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 16, 2025 to July 17, 2025
Time zone — UTC+01 (London) — summer time
List of solar flares for July 17, 2025
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 |
|---|---|---|---|---|
| C2.4 | 20:49 | 20:53 | 20:57 | 4136 |
| C2.8 | 14:09 | 14:13 | 14:16 | 4142 |
| C5.9 | 10:17 | 10:28 | 10:36 | 4136 |