Paul found some Nazi Vinyl records in Bob's house, so he asked about him it.
Bob: Not mine. Nazi stuff belongs to Moburg.
Paul: Moburg lives here?
Bob: He keeps his uniform here. I never see him from one month's end to the next.
I didn't understand "one month's end to the next" in his words.
What I understand from this is, Bob sees Moburg only on month ends.
His exact words are "I never see him from one month's end to the next."
I think Bob is saying , He has to wait till next month's end to see Moburg again.
You can also take it as, Bob sees Moburg very rarely, ie of course once a month.
