Yes, I think that is the correct exegesis though not all agree. While the Hebrew word yôm can simply mean a period of time, even an eon... it is best defined by how it is used.do you believe the Bible states that God created the world in six days, meaning six periods of 24 hours each?
Almost invariably when it is used with the ordinals (first, second, third, ect.) it means a *day* not an *age*. The use of *evening and morning* further indicates that a 24 hour day is meant.