Solar flares on September 20, 2023
The most powerful solar flare in 24 hours
M8.2 (strong) flare - September 20 at 3:19 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+01 (London) — summer time
List of solar flares for September 20, 2023
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.7 | 22:27 | 22:38 | 22:48 | 3442 |
| C1.3 | 21:29 | 21:38 | 21:44 | — |
| C5.5 | 19:36 | 19:40 | 19:44 | 3438 |
| C4.2 | 18:34 | 19:02 | 19:24 | 3442 |
| M8.2 | 15:11 | 15:19 | 15:25 | 3435 |
| C3.4 | 13:09 | 13:12 | 13:17 | 3438 |
| C3.1 | 10:03 | 10:10 | 10:15 | 3437 |
| C2.3 | 07:38 | 07:52 | 08:08 | 3429 |
| C3.0 | 05:27 | 05:37 | 05:46 | — |