Solar flares on July 21, 2025
The most powerful solar flare in 24 hours
C5.1 (normal) flare - July 21 at 6:09 AM
Solar activity index
Value as of the end of the day on July 21, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2025 to July 21, 2025
Time zone — UTC+06 (Omsk)
List of solar flares for July 21, 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 |
|---|---|---|---|---|
| C5.1 | 06:02 | 06:09 | 06:11 | 4143 |