Graveyard shift

Near-synonym: night shift (sometimes synonymous; sometimes coordinate)

I had to work the graveyard shift for most of that year, and at first I hated it, but eventually I even kind of liked it, in some ways.

Now she's workin' the graveyard shift at the hospital. She'll be comin' home in less than an hour and a half. Make your phone calls, talk to your people, then get the fuck out of my house.

It is generally believed that when rotating shifts are necessary the rotation should move clockwise (that is, day shift first, then swing shift, then graveyard shift, then back to day shift, and so on)

Near-synonym: night shift (sometimes synonymous; sometimes coordinate)

You'll have to ask the graveyard shift — the equipment was here when we left.