(Max rings the doorbell, arriving for his date with Lorelai)
LORELAI: It’s 8 o’clock. Who shows up at 8 o’clock for an 8 o’clock date?
RORY: I don’t know, maybe a Chilton teacher?
LORELAI: Everybody knows that 8 o’clock means 8:20, 8:15 tops!
Another mention of time and the problems it causes. Lorelai and Rory keep turning up late and getting into trouble for it; here someone else arrives on time and throws their schedule out.
The Annotated Gilmore Girls 