How Windows 7 defrag schedule work

I was playing around with the default Windows 7 defrag schedule and still can't figure how it work exactly. The default schedule is set to start at 1h am wednesday with 3 minutes idle condition. Their is also a settings that set the defrag to start as soon as it can if a schedule is missed. If my understanding is right, if the computer is close in the night of wednesday to thursday, it will...