Solar flares on August 20, 2025
The most powerful solar flare in 24 hours
C2.8 (normal) flare - August 20 at 11:36 AM
Solar activity index
Value as of the end of the day on August 20, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 19, 2025 to August 20, 2025
Time zone — UTC+02 (Amsterdam) — summer time
List of solar flares for August 20, 2025
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.3 | 11:52 | 11:57 | 12:01 | — |
| C2.8 | 11:24 | 11:36 | 11:52 | — |
| C2.5 | 04:18 | 04:39 | 04:49 | — |
| C1.0 | 00:16 | 00:21 | 00:26 | — |