When is Departure - 28th or 29th???

This may be a stupid question, but if we are car camping, when are we supposed to leave? It looks like a full day of music on the 28th, but the website doesn't make clear whether we have to be out on the 28th or whether we can leave the morning of the 29th.....

I can't find a schedule with times of acts so I have no idea how late shows are going on the 28th and am worried about whether I'm going to have to drive home all night on the 28th just to see Phish that night.

Thanks for any help y'all can provide.