Solar flares — Dec 21, 2002
The strongest solar flare in the day
      
      Flare of C4.6 level (normal) — in 04:53
    
      Solar activity index
Value for Dec 21, 2002 24:00 (end on the day). The maximum value is 10.0

Solar flares in 2 days
Chart of solar activity from Dec 20, 2002 to Dec 21, 2002
Time zone — UTC+00 (London)

          This chart in PNG format — high resolution
      API data: JSON or TXT
        
  List of solar flares for Dec 21, 2002
Total number of flares of class C and higher — 8 flares
C type — 8 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
| 
             
              
              C1.2
             
           | 
          21:44 | 21:47 | 21:51 | — | 
| 
             
              
              C1.0
             
           | 
          18:56 | 19:10 | 19:17 | 226 | 
| 
             
              
              C1.6
             
           | 
          09:46 | 09:51 | 09:54 | 226 | 
| 
             
              
              C4.6
             
           | 
          04:48 | 04:53 | 04:57 | 226 | 
| 
             
              
              C2.2
             
           | 
          04:38 | 04:41 | 04:45 | — | 
| 
             
              
              C2.9
             
           | 
          03:39 | 03:49 | 03:56 | 229 | 
| 
             
              
              C2.4
             
           | 
          02:46 | 02:52 | 02:57 | 226 | 
| 
             
              
              C1.7
             
           | 
          23:58 | 00:02 | 00:08 | 226 | 
