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Old 25th Feb 2011, 23:54
  #4 (permalink)  
Grasscarp
 
Join Date: Feb 2007
Location: West London
Posts: 257
Captain Claret had the correct information and then gave the wrong actual times for the chart in question. If the chart issue time is midnight then the validity period is 2100 to 0300. It is 3 hours either side of the issue time.
This is mentioned in the various countries AIP MET section. I have checked out quite a few round the world and they all seem to have the same thing on this.
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