"Call your labors...day". I think 'day' is just the name given to reference a period of time I don't think it was an actual 24hr period/1000years per day thing. Doesn't God have to follow the same laws of science that we do? Not sure but I am just asking. Anyway, if He does have to follow these laws then think of how long it would have taken for the earths creatures and such to form.