Solar flares on April 18, 2009
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 April 18, 2009
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 17, 2009 to April 18, 2009
Time zone — UTC+01 (London) — summer time
List of solar flares for April 18, 2009
There were no solar flares on the selected date