Did God create the whole universe, including the original plants, animals, and first two people (Adam and Eve) in six literal 24-hour days? Or did creation take place over millions of years?
Everywhere else in the Old Testament, when the Hebrew word for “day” (yom) appears with “evening” or “morning” or is modified by a number (e.g., “sixth day” or “five days”), it always means a 24-hour day.
There is no biblical or scientific reason to be ashamed of believing in a recent six-day creation. God has spoken clearly and truthfully. Will you trust His Word over the arrogant claims of sinful men? By Dr. Terry Mortenson, Answers in Genesis
Genesis 1:5 God called the light Day, and the darkness He called Night. So the evening and the morning were the first day.