Solar flares on October 23, 2025
The most powerful solar flare in 24 hours
C2.9 (normal) flare - October 23 at 6:57 PM
Solar activity index
Value as of the end of the day on October 23, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 22, 2025 to October 23, 2025
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for October 23, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 21:10 | 21:18 | 21:33 | 4261 |
| C2.9 | 18:41 | 18:57 | 19:06 | 4256 |
| C2.1 | 07:02 | 07:06 | 07:41 | 4256 |
| C1.3 | 06:46 | 06:50 | 06:54 | 4267 |
| C1.2 | 06:33 | 06:43 | 06:46 | 4267 |
| C1.5 | 00:41 | 00:54 | 00:59 | 4267 |