El tercer turno (trabajo).

The graveyard shift (informal), the third shift.

In Educational Materials:

"I had to work the graveyard shift for two years before I got the day shift."
ESL Podcast.


In News:

"The film, "El Velador" ("The Night Watchman"), follows Martin, who works the graveyard shift, so to speak, at Humaya Gardens. He arrives at sunset, sits or dozes through the night (it is too dangerous to actually patrol the grounds after dark, he says, because of partying, trigger-happy drug goons) and tidies up in the morning, picking up beer bottles and sweeping before walking off in the yellow daylight."
Los Angeles Times.