Solar flares on February 21, 2013
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 February 21, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 20, 2013 to February 21, 2013
Time zone — UTC-06 (Saint Paul)
List of solar flares for February 21, 2013
There were no solar flares on the selected date