Solar flares on January 21, 2004
The most powerful solar flare in 24 hours
C2.3 (normal) flare - January 21 at 3:36 AM
Solar activity index
Value as of the end of the day on January 21, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 20, 2004 to January 21, 2004
Time zone — UTC+03 (Simferopol)
List of solar flares for January 21, 2004
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 |
|---|---|---|---|---|
| C1.2 | 07:02 | 08:11 | 08:30 | — |
| C2.3 | 03:20 | 03:36 | 04:02 | 543 |