Originally Posted by
steveben53
A slot thing ?
I could understand that if the take off time had been moved back an hour, but it hasnt. The flight is simply scheduled to take an hour longer.
I wonder if they take a different routing on those days
Well the departure time may have to be fixed for some reasons (for example departure time before 12nn, CX can save on lunch allowance for crew).
For the arrival time maybe that was the only time CAD/AAHK could give them? They can just 'arrive early' anyway.
I have no idea but maybe those familiar with ops like our former ambassador can clarify