Solar flares on September 15, 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 September 15, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 14, 2021 to September 15, 2021
Time zone — UTC+00
List of solar flares for September 15, 2021
There were no solar flares on the selected date