Solar flares on September 20, 2023
The most powerful solar flare in 24 hours
M8.2 (strong) flare - September 20 at 2:19 PM
Solar activity index
Value as of the end of the day on September 20, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2023 to September 20, 2023
Time zone — UTC+00
List of solar flares for September 20, 2023
The total number of solar flares of class C and higher — 10 flares
C class — 9 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.3 | 23:17 | 23:21 | 23:25 | 3438 |
| C4.7 | 21:27 | 21:38 | 21:48 | 3442 |
| C1.3 | 20:29 | 20:38 | 20:44 | — |
| C5.5 | 18:36 | 18:40 | 18:44 | 3438 |
| C4.2 | 17:34 | 18:02 | 18:24 | 3442 |
| M8.2 | 14:11 | 14:19 | 14:25 | 3435 |
| C3.4 | 12:09 | 12:12 | 12:17 | 3438 |
| C3.1 | 09:03 | 09:10 | 09:15 | 3437 |
| C2.3 | 06:38 | 06:52 | 07:08 | 3429 |
| C3.0 | 04:27 | 04:37 | 04:46 | — |