How long do missiles take?

[Heath]

Today whilst playing FFVIII, I blew up a Missile Base. Then I sent Quistis and Zell with Squall to Balamb Garden to warn them about impending missiles. However, before I did that I popped into Balamb to play Triple Triad and chat with Ma Dincht and the Big Bad Rascal's mother whilst missiles flew towards Balamb Garden.

However, in the grand scheme of things, Squall and co had time to get a train all the way to Balamb, fight a bunch of Grats, and find out the Garden could fly before those missiles arrived.

Does anybody else think that Galbadia needs the people running their efficient train service running their missile bases from now on? One seems a lot better run than the other.