Joe Friday and Bill Gannon pull a double shift today (across two episodes) in the Robbery Homicide division.
The day watch episode is "Robbery - The Harassing Wife" shown on Thursday April 2, 1970.
The night watch episode is "Homicide - Cigarette Butt" shown on Thursday, October 30, 1969.
It looks like the Night Watch can sometimes occur before the Day Watch, at least for Monday, October 6.
Date: Monday, October 6
Working: Day Watch, Robbery Homicide
Boss: Captain Hugh Brown
Store owner: (After giving what sounds like a detailed description of the suspect) Now you go out and find a guy just like that.
Friday: And you'd like us to arrest him when we do?
Store owner: Well, certainly I would.
Friday: Well, I'm afraid we have a problem here.
Store owner: What do you mean by that?
Friday: Well, that description fits you, too.