Solar flares on October 23, 2025
The most powerful solar flare in 24 hours
C3.2 (normal) flare - October 23 at 1:08 AM
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-04 (Indianapolis) — summer time
List of solar flares for October 23, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.9 | 22:41 | 22:57 | 23:06 | 4256 |
| C2.1 | 11:02 | 11:06 | 11:41 | 4256 |
| C1.3 | 10:46 | 10:50 | 10:54 | 4267 |
| C1.2 | 10:33 | 10:43 | 10:46 | 4267 |
| C1.5 | 04:41 | 04:54 | 04:59 | 4267 |
| C3.2 | 00:56 | 01:08 | 01:15 | 4267 |
| C2.0 | 00:11 | 00:24 | 00:29 | — |