They make alarm clocks that can be set for each day f the week. For example, you can set Monday to wake you up at 8, Tuesday for 10, no alarm for Wednesday, etc.
Just be ready to pay a good chunk for one. The one my mom got me (at a yard sale of all places) costs about $20 at WalMart- but it's a LOT better than my cheapo one, considering I can actually see what the screen says to me from anywhere in my room.
-------
LW's BIG Contest
Enter now and win BIG!