Chart Validity
Hi all,
Quick Question Regarding Time Validity of Significant Prognostic & Wind Charts,
When a Chart is Valid say 18:00 , does this mean up until 18:00, between 12:00 and 18:00
or
Valid AT 18:00 ?
for example a 1hr flight departing 14:00, should they have 12:00 , 18:00 or both?
thanks,
-Jd