What time zone is it in the game, because it is 9 oclock real time for me and a flight was booked for 6 and still hasn't taken off?
UTC in general. Have a look to the clock on the footer bar to get the actual UTC time.
If you see somwhere "HT" instead of UTC, than you see the time zone of your airline hub (HT=Hubtime)
In wich country is your airline based? (or better: in wich country are you in real life?)