“Genesis 1 is not poetry. It is a quasi prose,” says Dr. H. Wayne House, Author, Theologian and Bible Scholar. “I think that yom is a day, a 24 hour solar day.” That could mean that (1) the 24-hour days were consecutive, making up one six day week or (2) that there were an unknown number of days between each of the six 24-hour creative periods, allowing for long eons between the creative days. “Either one of those are consistent with the word yom.”
Check out these other videos on Creation/Evolution:
Rick Gerhardt :: Is a six day creation scientifically plausible?
Eleonore Stump :: Creation vs. Evolution