Solar flares on April 21, 2023
The most powerful solar flare in 24 hours
M1.7 (strong) flare - April 21 at 9:12 PM
Solar activity index
Value as of the end of the day on April 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 20, 2023 to April 21, 2023
Time zone — UTC+03 (Cheboksary)
List of solar flares for April 21, 2023
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.7 | 20:44 | 21:12 | 21:44 | 3283 |
| C1.1 | 05:07 | 05:14 | 05:18 | — |
| C1.2 | 02:20 | 02:27 | 02:34 | 3281 |
| C2.3 | 01:23 | 01:30 | 01:37 | 3281 |