Genesis 1:5, 8, 13, 19, 23, 31

God called the light Day, and the darkness He called Night. So the evening and the morning were the first day.

And God called the firmament Heaven. So the evening and the morning were the second day.

So the evening and the morning were the third day.

So the evening and the morning were the fourth day.

So the evening and the morning were the fifth day.

Then God saw everything that He had made, and indeed it was very good. So the evening and the morning were the sixth day.