How far ahead can I make banana pudding with baked meringue before serving? I'm serving 20 30 at 3 1 p.m. on Saturday.

It's a shame that I should have to ask this question about a Southern staple.

UPDATE: Vidalia good cook Dot Ware suggests assembling the pudding up to meringue the day before, then whipping up and baking the meringue on top in the morning. That's a plan.