Solar flares on March 21, 2018
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 March 21, 2018
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 20, 2018 to March 21, 2018
Time zone — UTC+00
List of solar flares for March 21, 2018
There were no solar flares on the selected date