God creates light and separates light from darkness, and day from night, on the first day.
god created the first day: god called the day light and called the darkness night. Pretty simple.
God creates darkness and separates dark from light, and night from day, on the first night. BACKWARDS. god puts the day first, not night. God could have called night light but that would be silly. Light is day, night is not light.
Hope that helped.