They'd agreed 'beforehand' [='ahead of time'] to leave early.
We paid for our tickets 'beforehand'.
(..) Shall we? It's not gonna happen. They're doing it tonight. We can do it tomorrow. In the future, if I could see the schedule beforehand... So when I woke up this morning... ...he'd stolen all the insoles out of my shoes! Why? He thinks I slept with his (..)1996 TvShow: Friends Title: The One Where Dr. Ramoray Dies Season: 2 Episode 18