International Standard Version calling the light "day," and the darkness "night." The twilight and the dawn were day one.
American Standard Version And God called the light Day, and the darkness he called Night. And there was evening and there was morning, one day.
Young's Literal Translation and God calleth to the light 'Day,' and to the darkness He hath called 'Night;' and there is an evening, and there is a morning -- day one.