Too late

In Nabokov's first book, Mary, the main character, Ganin, gets his neighbor drunk because he wants him to sleep through his wife's arrival at the train station the next morning. The neighbor hasn't seen his wife - the Mary from the title - in four years, and he has spent the whole book looking forward to the reunion. As he stumbles toward sleep, he is tortured by the looming appointment, and Ganin commits a cruelty so that he can be the one who meets Mary in the morning.

Finding himself in his own room, he gave a broad, sleepy grin and collapsed slowly onto the bed. Suddenly horror crossed his face.

"Alarm clock--" he mumbled, sitting up. "Leb--over there, on the table, alarm clock--set it for half past seven."

"All right," said Ganin, and began moving the hand. He set it for ten o'clock, then changed his mind and set it for eleven.

When he looked at Alfyorov again the man was already sound asleep, flat on his back with one arm oddly thrown out. This was how drunken tramps used to sleep in Russian villages.

Can you guys think of other times in literature when a character has overslept?