Solar flares on April 20, 2021
The most powerful solar flare in 24 hours
C1.9 (normal) flare - April 20 at 8:15 AM
Solar activity index
Value as of the end of the day on April 20, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 19, 2021 to April 20, 2021
Time zone — UTC-04 (Indianapolis) — summer time
List of solar flares for April 20, 2021
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 21:18 | 21:29 | 21:41 | 2817 |
| C1.9 | 07:51 | 08:15 | 08:38 | 2814 |