Criminal Sentence 669: Hello. My name is Monday Joe

From a book I'm reading:

"Monday Joe will make the judge see that." ("that" refers to "my [the narrator's] point of view.")

There's nothing technically wrong with this but it's ambiguous. The author means "On Monday" but writes just "Monday." The character's name is Joe, but it looks like Monday Joe. A comma might help:

"Monday, Joe will make the judge see that."

I think "On Monday," would be even better:

"On Monday, Joe will make the judge see that."