Grandchild to be delivered well before

You are a 1600-2400 (4:00 p.m. – 12:00 a.m.) shift supervisor.  It’s Wednesday at 1615 and your subordinate John comes to you and asks you if he can have leave (take off) Friday.  He explained to you that, as you undoubtedly recall, his daughter is pregnant with his first grandchild.  As it turns out, his daughter’s doctor has decided that, instead of letting the pregnancy go into the following week when his daughter is due and when John is already scheduled for leave (already off Saturday and Sunday), the doctor has decided to induce the labor on Friday at a local hospital.  John said that while he fully expects his grandchild to be delivered well before he’d have to leave the hospital to report for his shift, he really wants to be sure that he’s there for the birth of the child so he wants to take off.