Clear Up My Confusion on Late Rent

[Shaun R.]

If rent is due on the 1st of the months and this is what the lease says:  

Is it late after the 5th or after the 6th?

To me... 5 days after the due date of the 1st is the 6th.  

[Donald S.]

language like that is ambiguous. I can see either way. That's why my lease states it is due in the 1st and late after the 5th at 5pm.