Solar flares on September 20, 2016
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 September 20, 2016
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2016 to September 20, 2016
Time zone — UTC+01 (London) — summer time
List of solar flares for September 20, 2016
There were no solar flares on the selected date