Solar flares on October 20, 2025
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 20 at 1:45 AM
Solar activity index
Value as of the end of the day on October 20, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2025 to October 20, 2025
Time zone — UTC+05:30 (Agra)
List of solar flares for October 20, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 5 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 20:44 | 21:15 | 21:53 | 4257 |
| C2.6 | 15:17 | 15:25 | 15:29 | 4248 |
| C3.5 | 13:09 | 13:18 | 13:50 | 4248 |
| M1.0 | 10:40 | 10:57 | 11:08 | 4248 |
| C5.9 | 07:54 | 08:04 | 08:17 | 4246 |
| C3.0 | 04:14 | 04:22 | 04:36 | — |
| M1.8 | 01:33 | 01:45 | 01:56 | 4246 |