I have to move a fridge on its side for no more than 20 minutes. How long must it sit upright before all of the fluids have resettled?

I was told to let my fridge sit upright for 24 hours after moving it (had to go at a slant up stairs).

Dr1757- I agree with 9EMLAND) I'D let it set upright for 24 HRS at least before pluging it in .:: F.B.E.