Quote from Rachel in The One with Monica and Chandler's Wedding (Part 2)
Rachel: The nights are the hardest. But then the day comes and that's every bit as hard as the night. And then the night comes again...
Monica: The days and nights are hard, I get it. Look, Rachel, I'm sorry. I have to start getting ready. I'm getting married today.
Rachel: I know. At dusk. That's such a hard time for me.