Solar flares on July 21, 2001
The most powerful solar flare in 24 hours
C6.6 (normal) flare - July 21 at 2:08 AM
Solar activity index
Value as of the end of the day on July 21, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2001 to July 21, 2001
Time zone — UTC-03 (Saint john) — summer time
List of solar flares for July 21, 2001
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 06:03 | 06:09 | 06:18 | 9543 |
| C6.6 | 02:02 | 02:08 | 02:12 | 9543 |