Under five minutes.
I interviewed, accepted the job offer at the end, showed up for my first scheduled shift and found out my manager wasn't the polite manager I interviewed with.
For the record, I was supposed to start at 9am. It was 8:45 when I walked in.
Manager, literally yelling from about 300ft away: YOU'RE LATE!
Me, confused: I'm 15 minutes early?
Manager: I EXPECT YOU TO BE HERE HALF A HOUR BEFORE EVERY SHIFT, IF YOU'RE LATE AGAIN YOU'RE ON THIN FUCKING ICE
And I turned my happy ass around and walked out.
I don't care if it was some bullshit tactic to "weed out" people, that is completely unacceptable behavior and in my younger years I have gotten into fist fights over someone speaking to another like that.
I had another job inside a week.
I don't care if they had someone to fill my spot the next day. It wasn't worth the time.