Genesis 1:5 And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.
Genesis 1:16 And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: [he made] the stars also.
Genesis 1:18 And to rule over the day and over the night, and to divide the light from the darkness: and God saw that [it was] good.