Solar flares on August 13, 2011
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 August 13, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 12, 2011 to August 13, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for August 13, 2011
There were no solar flares on the selected date