Solar flares on April 21, 2006
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 21, 2006
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 20, 2006 to April 21, 2006
Time zone — UTC+08 (Ulan-Ude)
List of solar flares for April 21, 2006
There were no solar flares on the selected date