When is the Inauguration starting?

The whole ceremony, not the concert thing they had on HBO yesterday. I thought I saw a commercial for it that said 7pm tomorrow on HBO, but I looked on the schedule and it's not on there. It's just movies all day (a href="http://www.hbo.com/apps/schedule/ScheduleServlet?ACTION_NEXT_GRID=NEXT)." rel="nofollow"http://www.hbo.com/apps/schedule/Schedul…/a So what channel and at what time is the whole ceremony?