How to change baby's sleeping schedule?

I'm not sure how it's happened but our eight month old doesn't go to bed until 1-1:30 A.M. What time should an eight month old be going to bed? And some tips to get her sleeping schedule on track? We've tried waking up at 7 or 8 A.M, and somehow she fights sleep all day until the usual 1 a.m. Please help!