There are to many variables to say for sure humidity, peak temps, and bugs for starters. I would say two days max in an uncontrolled but enclosed building environment.
But like I said there are just to many varables for us to tell you for sure without being there. I have hung them 8 days and I have hung them 12 hrs. Just use caution and check it often, I have never lost any meat before and don't plan too.