The title symbolize of the situation of stasis lived by the two characters. In Waiting for Godot, the two repetitively ask themselves when their friend Godot will show up and what day they are in. Sunday is the main day in which people meet: indeed it's the paradox, and it becomes the metaphor of the ideal psychological weekly timeframe in which anyone or anything is certainly or uncertainly awaited.

From J.Joyce's lesson, Epiphany defines a sudden unexpected revelation, it's the acknowledgement of a part of our own identity, which could happen in any way possible.