Solar flares on July 21, 2023
The most powerful solar flare in 24 hours
M3.1 (strong) flare - July 21 at 9:37 PM
Solar activity index
Value as of the end of the day on July 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2023 to July 21, 2023
Time zone — UTC-06 (Hay River) — summer time
List of solar flares for July 21, 2023
The total number of solar flares of class C and higher — 4 flares
C class — 2 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.0 | 22:12 | 22:16 | 22:24 | 3373 |
| M3.1 | 21:12 | 21:37 | 21:55 | 3372 |
| C2.1 | 04:44 | 04:54 | 05:03 | 3373 |
| C1.5 | 03:45 | 03:52 | 03:57 | 3373 |