[quote]The flight information published by Air Canada is what they want customers to see... Usually they define "departure" as boarding or gate-closing. There is also the taxi and take-off time which is not part of this "departure" time according to the airlines.[quote]Normally I wouldn't have noticed, except I was curious about my friends progress and the probability of her making the original connection. Had the AC site shown 13:00 all along I wouldn't have thought twice about it.

But even several hours into the flight the AC web site indicated a 13:40 departure, as did all the flight trackers. It was only these evening when I double checked (and after the flight had landed) that the time had changed to 13:00.