Solar flares on November 21, 2025
The most powerful solar flare in 24 hours
C3.8 (normal) flare - November 21 at 3:30 AM
Solar activity index
Value as of the end of the day on November 21, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from November 20, 2025 to November 21, 2025
Time zone — UTC-10 (Honolulu)
List of solar flares for November 21, 2025
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 19:42 | 19:45 | 19:47 | 4290 |
| C1.6 | 18:38 | 18:45 | 18:49 | 4290 |
| C1.1 | 16:27 | 16:32 | 16:34 | 4290 |
| C2.3 | 15:10 | 15:20 | 15:30 | 4290 |
| C1.2 | 15:00 | 15:08 | 15:10 | 4290 |
| C2.1 | 12:29 | 12:37 | 12:42 | 4290 |
| C1.3 | 09:47 | 09:54 | 09:57 | 4284 |
| C1.6 | 07:45 | 07:50 | 07:53 | 4284 |
| C3.8 | 03:21 | 03:30 | 03:33 | 4290 |
| C1.0 | 01:56 | 02:00 | 02:04 | 4284 |