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Old 25th Feb 2011, 17:34
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ibrahim3
 
Join Date: Dec 2009
Location: Damascus-Syria
Age: 33
Posts: 2
Question High Level Sigwx Charts

Hiii All
Before Your Flight You Receive Sigwx Chart
Example
World Area Forecast Center
London
Fixed Time Forecast Chart
Fl250-fl630
Valid 00 Utc On 23.feb.2011

Is It Means Valid Until 00 Utc Or Valid From 00 Utc Until The Next Fixed Time ?

Actually Am Confused , I Had Alot Of Discussions About It And Each One Says To Me Different Answer ,so Please If Anyone Have An Answer From A Book And Can Clarify This Subject
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