Well, the Bible clearly says that "there came to be evening and there came to be morning, a xxth day". So, according to the Bible, the days were literal 24 hour days.
Running Man,
I discussed this a long time ago on H2o or some other discussion group. The word Day in and of itself does not mean 24 hours and the expression evening/moring can bracket all six of them and combine them with other events to make them into one day. Or we can group all the 7 days of Passover together to make one event. Why not do some research on this yourself. It is a great study. It is all relative to the context, and great amounts of time can be compressed into such epoch's for simplification. Here let me start you off and show how all such days can be combined into one.
Genesis 2:4 These are the generations of the heavens and of the earth when they were created, in the day that the LORD God made the earth and the heavens,
Do you see what I mean now?
Joseph