Solar flares on October 20, 2021
The most powerful solar flare in 24 hours
There were no solar flares on the selected date
Solar activity index
Value as of the end of the day on October 20, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2021 to October 20, 2021
Time zone — UTC+01 (London) — summer time
List of solar flares for October 20, 2021
There were no solar flares on the selected date