Day and night occur due to the earths rotation. As the earth turns on its axis, whatever part of the earth that is away from the sun will be in night, and whatever part of the earth is facing toward the sun is in day. If you have ever watched a sunrise, the sun isn't really rising, the earth is turning.
Day and night occur due to rotation of earth. For detailed information, please visit this link.
Moving of the earth.
Day and night occur because of one side of the earth facing the sun and the other side not
I don't know how day and night happens this is so bad